Housing. Thermostat. Cover. Engine Coolant. Water Neck.
Engine Coolant Housing where a Thermostat is used but not included.
Engine Coolant Thermostat Housing
Fits 535i, 535is, 635CSi, 735i, 735iL, L6, L7
535, 635, 735.
Engine Coolant Thermostat Housing - Repair or Replace
A failed thermostat housing will likely result in a cooling system leak, or will cause the engine in your to overheat. Consider replacing your engine coolant thermostat or having our staff of expert techs handle it for you.