Water Pump & Thermostat

Shop New OEM water pumps and thermostats for GM vehicles. Our factory-original cooling system components are sourced from GM surplus — the correct pump flow rate, thermostat opening temperature, and mounting configuration for your specific engine.

The water pump and thermostat work together to maintain your engine at its optimal operating temperature. OEM water pumps provide the factory-specified flow rate at all engine speeds, and OEM thermostats open at the precise temperature calibrated for your engine's combustion efficiency and emissions targets.

Replace the water pump, thermostat, and coolant at the same service interval for a complete cooling system service. Verify part numbers against your engine RPO code before ordering.