Buy 2003 Volkswagen Passat GL Sedan 1.8L M/T FWD Engine Coolant Thermostat Housing. 1.8 LITER. Eurovan - OEM Volkswagen Part # 06B121121L (06B-121-121-L, 06B121121)

Adapter. Engine Coolant Thermostat Housing. Thermostat hsng. Water Neck.
4.0L Engine Includes Housing. Engine Coolant Housing where a Thermostat is used but not included.

Engine Coolant Thermostat Housing

Fits EuroVan, Passat, Passat Wagon

1.8 LITER. Eurovan. Passat; 1.8L. S6.
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 2003 Volkswagen Passat to overheat. Consider replacing your engine coolant thermostat or having our staff of expert techs handle it for you.