Stant Radiator Cap 21-25psi w/ Pressure Release Lever

Turn to Stant high-pressure 21-25psi Round style cap w/ Pressure Release Lever when you turn up the heat. Higher cooling system pressure raises the boiling point of coolant to reduce the risk of overheating, especially in racing applications. 

Recovery system allow coolant to exit the cooling system into an overflow or recovery bottle as coolant heats and expands. As the system cools, recovery system cap will draw coolant back in to keep the cooling system full.