If you're replacing the clutch in your N54 135/335, you must pick up this install kit!
BMW lists the following warning with the bell-housing bolts: Caution! Aluminium screw only to be used 1x. Observe torque specifications. Replace all screws.
Don't get caught on the side of the street because you decided not to replace them. Eliminate the headache and hassle of troubleshooting issues and replace these the FIRST TIME.
hpf n54 clutch install kits from horsepowerfreaks clutch install kits. Install and installation help available for parts and accessories for these model years.