This aluminium tank is designed to reduce the amount of air bubbles in the water cooling system, and thereby prevent overheating. At high engine RPM the water pump can create aeration and cavitation (tiny air bubbles in the collant), and can debilitate its ability to cool.
Carbing Universal Coolant Overflow Tanks from HorsepowerFreaks
carbing universal coolant overflow tanks from horsepowerfreaks coolant overflow tanks. Install and installation help available for parts and accessories for these model years.