Description
Heater control valves are not thought of as a consumable product, but over time being pulled back and forth or from lack of use the diaphragm in the heater valve can tear and precious coolant will leak out. Not a good think, coolant works a lot better on the inside of the engine. This is a an easy change out but you will need a new gasket at the base of the heater valve, 88G221. Cross Reference 635-376