ACDelco 15-5557 GM Original Equipment Heater Bypass Valve

Brand	ACDelco
Model	15-5557

Restore cooling system function and performance

GM-recommended replacement part for your GM vehicle's original factory component

Offering the quality, reliability, and durability of GM OE

Manufactured to GM OE specification for fit, form, and function

ACDelco GM Original Equipment Heater Bypass Valves are control valves for the flow of coolant through the heater core. When the heater valve is closed, the bypass valve diverts the coolant flow back to the engine. The valve maintains coolant flow through the thermostat housing to ensure correct operation of the thermostat. This original equipment heater bypass valve is a GM-recommended replacement for your vehicle's original components and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.