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They're all rated for continuous duty service and have been tested up to 2
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2014-2019 Chevrolet Silverado 2500 HD 78
1964-1972 Ford Custom 500
Stant 19-21 PSI Radiator Cap w/o Lever Hitches They're all rated for continuousRadiator caps are an often overlooked component of the cooling system that should be checked and replaced often. Higher cooling system pressure raises the boiling point of coolant to help reduce the risk of overheating. Caps allow coolant to exit the cooling system into an overflow or recovery bottle as coolant heats and expands. Recovery style caps work when the overflow hose is properly connected to the recovery bottle, as the system cools, coolant
