LuK: The brand professionals trust! For over thirty years, automotive aftermarket technicians have staked their reputation – and their customers’ satisfaction – on LuK RepSet® clutch components. Each set contains everything you need to get the job done right: new clutch, disc, release bearing, pilot bearing (where required), spline tool and lubricant. As an original-equipment supplier, LuK develops the performance specifications for individual vehicle applications. LuK offers the highest in-house manufactured content of any supplier in the industry.

Features

Pressure Plate Type: Push Type Diaphragm
Clutch Disc Diameter: 11-7/8"
Input Shaft Diameter: 1-1/8"
Clutch Diameter: 13-1/2"
Clutch Disc Spline Quantity: 10
Clutch Plate Facing Outer Diameter: 11-7/8"
Kit contents: Cover Assembly, Clutch Disc, Release Bearing, all Necessary Pilots, Accessory Pack
Number of clutch disc springs: 5

Notes:

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Make Vehicle	Model	Year	Engine	Notes
1988-1994 Chevrolet Blazer	Blazer	1988-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987 Chevrolet Blazer	Blazer	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet Blazer	Blazer	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1969-1974 Chevrolet Blazer	Blazer	1969-1974	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1969-1974 Chevrolet Blazer	Blazer	1969-1974	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973-1974 Chevrolet Blazer	Blazer	1973-1974	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1969-1973 Chevrolet Blazer	Blazer	1969-1973	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986 Chevrolet C10	C10	1985-1986	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1981-1986 Chevrolet C10	C10	1981-1986	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986 Chevrolet C10	C10	1981-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 Chevrolet C10	C10	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1981 Chevrolet C10	C10	1975-1981	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1981 Chevrolet C10	C10	1975-1981	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet C10	C10	1975-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980 Chevrolet C10	C10	1980	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1980 Chevrolet C10	C10	1977-1980	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1980 Chevrolet C10	C10	1977-1980	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985 Chevrolet C10 Suburban	C10 Suburban	1985	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1968 Chevrolet C10 Suburban	C10 Suburban	1968	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1995 Chevrolet C1500	C1500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1991, 1995 Chevrolet C1500	C1500	1988-1991, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1995 Chevrolet C1500	C1500	1988-1990, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1992-1994 Chevrolet C1500	C1500	1988-1990, 1992-1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1992-1994 Chevrolet C1500	C1500	1992-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991-1994 Chevrolet C1500	C1500	1991-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1993 Chevrolet C1500	C1500	1989-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet C1500	C1500	1991	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1987 Chevrolet C20	C20	1981-1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986 Chevrolet C20	C20	1985-1986	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1981-1986 Chevrolet C20	C20	1981-1986	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 Chevrolet C20	C20	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1986 Chevrolet C20	C20	1975-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978, 1980-1984 Chevrolet C20	C20	1975-1978, 1980-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet C20	C20	1975-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1980 Chevrolet C20	C20	1977-1980	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 Chevrolet C20	C20	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986 Chevrolet C20 Suburban	C20 Suburban	1985-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986 Chevrolet C20 Suburban	C20 Suburban	1985-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1967-1968 Chevrolet C20 Suburban	C20 Suburban	1967-1968	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1995 Chevrolet C2500	C2500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1991, 1995 Chevrolet C2500	C2500	1988-1991, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1995 Chevrolet C2500	C2500	1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1994-1995 Chevrolet C2500	C2500	1994-1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1992-1994 Chevrolet C2500	C2500	1988-1990, 1992-1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1992-1994 Chevrolet C2500	C2500	1992-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1994 Chevrolet C2500	C2500	1988-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1993 Chevrolet C2500	C2500	1989-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1993 Chevrolet C2500	C2500	1992-1993	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1991 Chevrolet C2500	C2500	1991	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 Chevrolet C2500	C2500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1981-1986 Chevrolet C30	C30	1981-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 Chevrolet C30	C30	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1986 Chevrolet C30	C30	1975-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1984 Chevrolet C30	C30	1975-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet C30	C30	1975-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1978 Chevrolet C30	C30	1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1960 Chevrolet C30 Pickup	C30 Pickup	1960	8 Cylinder 4.6 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1995 Chevrolet C3500	C3500	1988-1990, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1992-1995 Chevrolet C3500	C3500	1992-1995	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1994 Chevrolet C3500	C3500	1991-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1993 Chevrolet C3500	C3500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet C3500	C3500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1988-1990 Chevrolet C3500	C3500	1988-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1959-1960 Chevrolet El Camino	El Camino	1959-1960	8 Cylinder 4.6 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 Chevrolet G10	G10	1985-1989	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1985-1989 Chevrolet G10	G10	1985-1989	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1984 Chevrolet G10	G10	1977-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1978-1984 Chevrolet G10	G10	1978-1984	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978, 1980-1984 Chevrolet G10	G10	1975-1978, 1980-1984	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 Chevrolet G10	G10	1979	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 Chevrolet G20	G20	1985-1989	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1985-1989 Chevrolet G20	G20	1985-1989	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1983-1989 Chevrolet G20	G20	1983-1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 Chevrolet G20	G20	1979-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980-1984 Chevrolet G20	G20	1980-1984	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978, 1980-1984 Chevrolet G20	G20	1975-1978, 1980-1984	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1984 Chevrolet G20	G20	1982-1984	6 Cylinder 4.1 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 Chevrolet G20	G20	1979	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 Chevrolet G20	G20	1975-1978	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979, 1991-1995 Chevrolet G30	G30	1979, 1991-1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1983-1990 Chevrolet G30	G30	1983-1990	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 Chevrolet G30	G30	1985-1989	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1985 Chevrolet G30	G30	1985	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978, 1980-1984 Chevrolet G30	G30	1975-1978, 1980-1984	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1978-1979, 1982 Chevrolet G30	G30	1978-1979, 1982	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1979 Chevrolet G30	G30	1975-1979	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1976 Chevrolet G30	G30	1975-1976	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986 Chevrolet K10	K10	1985-1986	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1981-1986 Chevrolet K10	K10	1981-1986	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986 Chevrolet K10	K10	1981-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 Chevrolet K10	K10	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978, 1981-1984 Chevrolet K10	K10	1977-1978, 1981-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet K10	K10	1975-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976, 1980 Chevrolet K10	K10	1976, 1980	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1976, 1980 Chevrolet K10	K10	1975-1976, 1980	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 Chevrolet K10	K10	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1974 Chevrolet K10 Pickup	K10 Pickup	1974	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1969-1974 Chevrolet K10 Pickup	K10 Pickup	1969-1974	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1969 Chevrolet K10 Pickup	K10 Pickup	1969	8 Cylinder 6.5 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1968-1969 Chevrolet K10 Pickup	K10 Pickup	1968-1969	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985 Chevrolet K10 Suburban	K10 Suburban	1985	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980 Chevrolet K10 Suburban	K10 Suburban	1980		Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1995 Chevrolet K1500	K1500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1991, 1995 Chevrolet K1500	K1500	1988-1991, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1995 Chevrolet K1500	K1500	1988-1990, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1992-1994 Chevrolet K1500	K1500	1988-1990, 1992-1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1992-1994 Chevrolet K1500	K1500	1992-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991-1994 Chevrolet K1500	K1500	1991-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1993 Chevrolet K1500	K1500	1989-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet K1500	K1500	1991	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988 Chevrolet K1500	K1500	1988	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986 Chevrolet K20	K20	1981-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 Chevrolet K20	K20	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985 Chevrolet K20	K20	1985	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1985 Chevrolet K20	K20	1985	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1984 Chevrolet K20	K20	1975-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet K20	K20	1975-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976-1978 Chevrolet K20	K20	1976-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 Chevrolet K20	K20	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1978 Chevrolet K20	K20	1978	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981 Chevrolet K20 Suburban	K20 Suburban	1981		Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1967 Chevrolet K20 Suburban	K20 Suburban	1967	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1995 Chevrolet K2500	K2500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1991, 1995 Chevrolet K2500	K2500	1988-1991, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1995 Chevrolet K2500	K2500	1988-1990, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1994-1995 Chevrolet K2500	K2500	1994-1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1992-1994 Chevrolet K2500	K2500	1988-1990, 1992-1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1992-1994 Chevrolet K2500	K2500	1992-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991-1994 Chevrolet K2500	K2500	1991-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1990, 1992-1993 Chevrolet K2500	K2500	1989-1990, 1992-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1993 Chevrolet K2500	K2500	1992-1993	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988, 1991 Chevrolet K2500	K2500	1988, 1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 Chevrolet K2500	K2500	1991	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 Chevrolet K2500	K2500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1981-1986 Chevrolet K30	K30	1981-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 Chevrolet K30	K30	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977, 1980-1986 Chevrolet K30	K30	1977, 1980-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1984 Chevrolet K30	K30	1977-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1980 Chevrolet K30	K30	1977-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1995 Chevrolet K3500	K3500	1988-1990, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1994-1995 Chevrolet K3500	K3500	1994-1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1994 Chevrolet K3500	K3500	1991-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1991, 1993 Chevrolet K3500	K3500	1989-1991, 1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1993 Chevrolet K3500	K3500	1992-1993	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1991 Chevrolet K3500	K3500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1988-1990 Chevrolet K3500	K3500	1988-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988 Chevrolet K3500	K3500	1988	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986 Chevrolet K5 Blazer	K5 Blazer	1981-1986	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986 Chevrolet K5 Blazer	K5 Blazer	1981-1986	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978, 1981-1982 Chevrolet K5 Blazer	K5 Blazer	1977-1978, 1981-1982	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet K5 Blazer	K5 Blazer	1975-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1980 Chevrolet K5 Blazer	K5 Blazer	1977-1980	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976-1978 Chevrolet K5 Blazer	K5 Blazer	1976-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1980 Chevrolet P10	P10	1975-1980	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 Chevrolet P10	P10	1979	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975, 1977-1978 Chevrolet P10	P10	1975, 1977-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1989 Chevrolet P20	P20	1979-1989	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1989 Chevrolet P20	P20	1982-1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976, 1979 Chevrolet P20	P20	1976, 1979	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 Chevrolet P20	P20	1975-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1995 Chevrolet P30	P30	1979-1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1992-1995 Chevrolet P30	P30	1992-1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1995 Chevrolet P30	P30	1991-1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1993 Chevrolet P30	P30	1982-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 Chevrolet P30	P30	1991	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1990 Chevrolet P30	P30	1975-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1984 Chevrolet P30	P30	1975-1984	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 Chevrolet P30	P30	1975-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1963-1964 Chevrolet P30 Series	P30 Series	1963-1964	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet R10	R10	1987	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1987 Chevrolet R10	R10	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet R10	R10	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988 Chevrolet R20	R20	1988	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987-1988 Chevrolet R20	R20	1987-1988	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988 Chevrolet R20	R20	1988	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987 Chevrolet R20	R20	1987	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1987 Chevrolet R20	R20	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet R20	R20	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet R20	R20	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet R20 Suburban	R20 Suburban	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1989 Chevrolet R2500	R2500	1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989 Chevrolet R2500	R2500	1989	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet R2500 Suburban	R2500 Suburban	1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet R2500 Suburban	R2500 Suburban	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988 Chevrolet R30	R30	1988	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987-1988 Chevrolet R30	R30	1987-1988	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988 Chevrolet R30	R30	1988	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987 Chevrolet R30	R30	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet R30	R30	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1989, 1991 Chevrolet R3500	R3500	1989, 1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1991 Chevrolet R3500	R3500	1989-1991	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet R3500	R3500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1989-1990 Chevrolet R3500	R3500	1989-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1990-1993 Chevrolet S10	S10	1990-1993	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1990-1993 Chevrolet S10 Blazer	S10 Blazer	1990-1993	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1995 Chevrolet Tahoe	Tahoe	1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1987 Chevrolet V10	V10	1987	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1987 Chevrolet V10	V10	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V10	V10	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V10 Suburban	V10 Suburban	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V20	V20	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V20	V20	1987	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V20 Suburban	V20 Suburban	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988 Chevrolet V30	V30	1988	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988 Chevrolet V30	V30	1988	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987-1988 Chevrolet V30	V30	1987-1988	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V30	V30	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 Chevrolet V30	V30	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1989-1991 Chevrolet V3500	V3500	1989-1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1989-1991 Chevrolet V3500	V3500	1989-1991	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 Chevrolet V3500	V3500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1989-1990 Chevrolet V3500	V3500	1989-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1977-1978 GMC C15	C15	1977-1978	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC C15	C15	1975-1978	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC C15	C15	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC C15	C15	1975-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1977 GMC C15	C15	1975-1977	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1988-1990, 1995 GMC C1500	C1500	1981-1986, 1988-1990, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1991, 1995 GMC C1500	C1500	1981-1986, 1991, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1993, 1995 GMC C1500	C1500	1993, 1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1994 GMC C1500	C1500	1991-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990, 1992-1994 GMC C1500	C1500	1988-1990, 1992-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991-1992, 1994 GMC C1500	C1500	1991-1992, 1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1993 GMC C1500	C1500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1985-1986, 1988-1990 GMC C1500	C1500	1985-1986, 1988-1990	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1982-1986 GMC C1500	C1500	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC C1500	C1500	1979-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC C1500	C1500	1979-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC C1500	C1500	1979-1980	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC C1500	C1500	1979-1980	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC C1500	C1500	1979-1980	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985 GMC C1500 Suburban	C1500 Suburban	1985	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC C25	C25	1977-1978	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC C25	C25	1975-1978	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC C25	C25	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC C25	C25	1975-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1977 GMC C25	C25	1975-1977	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973 GMC C25/C2500 Suburban	C25/C2500 Suburban	1973	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973 GMC C25/C2500 Suburban	C25/C2500 Suburban	1973	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973 GMC C25/C2500 Suburban	C25/C2500 Suburban	1973	8 Cylinder 7.4 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1988-1990, 1995 GMC C2500	C2500	1981-1986, 1988-1990, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1991, 1995 GMC C2500	C2500	1981-1986, 1991, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991, 1995 GMC C2500	C2500	1991, 1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1995 GMC C2500	C2500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1994 GMC C2500	C2500	1991-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990, 1992-1994 GMC C2500	C2500	1988-1990, 1992-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1994 GMC C2500	C2500	1992-1994	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1992-1994 GMC C2500	C2500	1992-1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1993 GMC C2500	C2500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 GMC C2500	C2500	1991	6 Cylinder 4.3 Liter	To 01/31/1991 Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986, 1988-1990 GMC C2500	C2500	1985-1986, 1988-1990	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1982-1986 GMC C2500	C2500	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1986 GMC C2500	C2500	1979-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC C2500	C2500	1979-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980-1984 GMC C2500	C2500	1980-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC C2500	C2500	1979-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980 GMC C2500	C2500	1980	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1986, 1992-1995 GMC C2500 Suburban	C2500 Suburban	1985-1986, 1992-1995	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985 GMC C2500 Suburban	C2500 Suburban	1985	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC C35	C35	1975-1978	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1978 GMC C35	C35	1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC C35	C35	1975-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1977 GMC C35	C35	1975-1977	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1967 GMC C35/C3500 Pickup	C35/C3500 Pickup	1967	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1991, 1995 GMC C3500	C3500	1981-1986, 1991, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991, 1995 GMC C3500	C3500	1991, 1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1990, 1992-1994 GMC C3500	C3500	1988-1990, 1992-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1994 GMC C3500	C3500	1992-1994	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1988-1993 GMC C3500	C3500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990 GMC C3500	C3500	1988-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1986 GMC C3500	C3500	1986	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1986 GMC C3500	C3500	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1986 GMC C3500	C3500	1979-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC C3500	C3500	1979-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC C3500	C3500	1979-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC G15	G15	1977-1978	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC G15	G15	1975-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC G15	G15	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 GMC G1500	G1500	1985-1989	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 GMC G1500	G1500	1985-1989	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC G1500	G1500	1979-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC G1500	G1500	1979-1984	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980-1984 GMC G1500	G1500	1980-1984	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 GMC G1500	G1500	1979	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976-1978 GMC G25	G25	1976-1978	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC G25	G25	1975-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 GMC G2500	G2500	1985-1989	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 GMC G2500	G2500	1985-1989	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1983-1989 GMC G2500	G2500	1983-1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC G2500	G2500	1979-1984	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1984 GMC G2500	G2500	1981-1984	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980-1984 GMC G2500	G2500	1980-1984	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 GMC G2500	G2500	1979	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC G35	G35	1975-1978	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC G35	G35	1975-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976 GMC G35	G35	1976	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1985-1989 GMC G3500	G3500	1985-1989	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1983-1989 GMC G3500	G3500	1983-1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980-1984 GMC G3500	G3500	1980-1984	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 GMC G3500	G3500	1979	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1992-1995 GMC Jimmy	Jimmy	1992-1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1991 GMC Jimmy	Jimmy	1988-1991	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1981-1987 GMC Jimmy	Jimmy	1981-1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1987 GMC Jimmy	Jimmy	1981-1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1970-1973, 1980 GMC Jimmy	Jimmy	1970-1973, 1980	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1970-1980 GMC Jimmy	Jimmy	1970-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973-1974, 1976 GMC Jimmy	Jimmy	1973-1974, 1976	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC K15	K15	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC K15	K15	1977-1978	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1977 GMC K15	K15	1975-1977	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1976 GMC K15	K15	1975-1976	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976 GMC K15	K15	1976	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1968 GMC K15/K1500 Pickup	K15/K1500 Pickup	1968	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1988-1990, 1995 GMC K1500	K1500	1981-1986, 1988-1990, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1984-1986, 1991, 1995 GMC K1500	K1500	1984-1986, 1991, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1995 GMC K1500	K1500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1991-1994 GMC K1500	K1500	1991-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990, 1992-1994 GMC K1500	K1500	1988-1990, 1992-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1985-1986, 1988-1994 GMC K1500	K1500	1985-1986, 1988-1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1988-1993 GMC K1500	K1500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1982-1986 GMC K1500	K1500	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1983 GMC K1500	K1500	1981-1983	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC K1500	K1500	1979-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980 GMC K1500	K1500	1980	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980 GMC K1500	K1500	1980	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1980-1981 GMC K1500 Suburban	K1500 Suburban	1980-1981		Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC K25	K25	1975-1978	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC K25	K25	1977-1978	8 Cylinder 5.0 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1978 GMC K25	K25	1978	6 Cylinder 4.1 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1976-1978 GMC K25	K25	1976-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1977 GMC K25	K25	1975-1977	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973-1974 GMC K25/K2500 Suburban	K25/K2500 Suburban	1973-1974	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1973-1974 GMC K25/K2500 Suburban	K25/K2500 Suburban	1973-1974	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1990, 1995 GMC K2500	K2500	1988-1990, 1995	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1991, 1995 GMC K2500	K2500	1981-1986, 1991, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991, 1995 GMC K2500	K2500	1991, 1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1995 GMC K2500	K2500	1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1991-1994 GMC K2500	K2500	1991-1994	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990, 1992-1994 GMC K2500	K2500	1988-1990, 1992-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1994 GMC K2500	K2500	1992-1994	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1985, 1988-1990, 1994 GMC K2500	K2500	1985, 1988-1990, 1994	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1988-1993 GMC K2500	K2500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1993 GMC K2500	K2500	1993	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1992 GMC K2500	K2500	1991-1992	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1982-1986 GMC K2500	K2500	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC K2500	K2500	1979-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC K2500	K2500	1979-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1992-1995 GMC K2500 Suburban	K2500 Suburban	1992-1995	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1984 GMC K2500 Suburban	K2500 Suburban	1982-1984	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981 GMC K2500 Suburban	K2500 Suburban	1981		Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977-1978 GMC K35	K35	1977-1978	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1977 GMC K35	K35	1977	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1981-1986, 1991, 1995 GMC K3500	K3500	1981-1986, 1991, 1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991, 1995 GMC K3500	K3500	1991, 1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1990, 1992-1994 GMC K3500	K3500	1988-1990, 1992-1994	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1992-1994 GMC K3500	K3500	1992-1994	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1988-1993 GMC K3500	K3500	1988-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990 GMC K3500	K3500	1988-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1982-1986 GMC K3500	K3500	1982-1986	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1986 GMC K3500	K3500	1979-1986	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC K3500	K3500	1979-1984	6 Cylinder 4.8 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC K3500	K3500	1979-1980	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1980 GMC P1500	P1500	1979-1980	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979 GMC P1500	P1500	1979	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975-1978 GMC P25	P25	1975-1978	8 Cylinder 5.7 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1989 GMC P2500	P2500	1979-1989	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1989 GMC P2500	P2500	1982-1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC P2500	P2500	1979-1984	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1975, 1977-1978 GMC P35	P35	1975, 1977-1978	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1995 GMC P3500	P3500	1979-1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1992-1995 GMC P3500	P3500	1992-1995	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991-1995 GMC P3500	P3500	1991-1995	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1982-1993 GMC P3500	P3500	1982-1993	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1991 GMC P3500	P3500	1979-1991	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1979-1984 GMC P3500	P3500	1979-1984	6 Cylinder 4.8 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R1500	R1500	1987	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1987 GMC R1500	R1500	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R1500	R1500	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R1500 Suburban	R1500 Suburban	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1989 GMC R2500	R2500	1988-1989	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1989 GMC R2500	R2500	1988-1989	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1989 GMC R2500	R2500	1988-1989	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987 GMC R2500	R2500	1987	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1987 GMC R2500	R2500	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R2500	R2500	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R2500	R2500	1987	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R2500	R2500	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 GMC R2500 Suburban	R2500 Suburban	1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1991 GMC R2500 Suburban	R2500 Suburban	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1987-1988, 1990 GMC R2500 Suburban	R2500 Suburban	1987-1988, 1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987-1988 GMC R2500 Suburban	R2500 Suburban	1987-1988	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1991 GMC R3500	R3500	1988-1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987, 1991 GMC R3500	R3500	1987, 1991	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 GMC R3500	R3500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1990 GMC R3500	R3500	1988-1990	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990 GMC R3500	R3500	1988-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987 GMC R3500	R3500	1987	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC R3500	R3500	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1990 GMC S15	S15	1990	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1990-1991 GMC S15 Jimmy	S15 Jimmy	1990-1991	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1991-1993 GMC Sonoma	Sonoma	1991-1993	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1973-1974 GMC Sprint	Sprint	1973-1974	8 Cylinder 7.4 Liter	12" Clutch Schaeffler Global Number 631 2757 770 Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V1500	V1500	1987	6 Cylinder 4.3 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise. To eliminate squeaking, refer to LB135.
1987 GMC V1500	V1500	1987	8 Cylinder 5.0 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V1500	V1500	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V1500	V1500	1987	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V1500 Suburban	V1500 Suburban	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V2500	V2500	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V2500	V2500	1987	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V2500 Suburban	V2500 Suburban	1987	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1988-1991 GMC V3500	V3500	1988-1991	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987, 1991 GMC V3500	V3500	1987, 1991	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1991 GMC V3500	V3500	1991	8 Cylinder 7.4 Liter	Unleaded Fuel Emission Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.
1988-1990 GMC V3500	V3500	1988-1990	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1988-1990 GMC V3500	V3500	1988-1990	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. Refer to LB177 regarding hard pedal/noise.
1987 GMC V3500	V3500	1987	8 Cylinder 6.2 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1987 GMC V3500	V3500	1987	8 Cylinder 7.4 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132.
1995 GMC Yukon	Yukon	1995	8 Cylinder 5.7 Liter	Schaeffler Global Number 631 2757 770 12" clutch Heavy-Duty Refer to LB179 regarding correct release bearing/fork attachment. Use only standard 3/8-inch lock washer or thread locking compound on clutch mounting bolts. Refer to LB132. To eliminate squeaking, refer to LB135.

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