ACDelco 15-5557 GM Original Equipment Heater Bypass Valve 729295112068 How it Works

How it Works

'til death do us part

screws and tacks

All New CNC Machined Casting Assembled with Components that Exceed OEM Standards

Custom patterned for a perfect fit

ACDelco 15-5557 GM Original Equipment Heater Bypass Valve 729295112068 How it WorksBrand 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