Shop OEM Volkswagen Group Part # 1C9121321 (1C9-121-321). Cap. Reservoir. Cover. Engine Coolant. Radiator. 3.0 LITER, MAIN. 3.6 LITER. 4.0 LITER. 4.2 LITER. 5.0 LITER, MAIN. DIESEL, MAIN. Touareg

A Cover that prevents foreign debris from entering the container. Location-Reservoir. Radiator Cap.

Radiator CapEngine Coolant Reservoir Cap

Fits Passat, Passat Wagon, Q7, Touareg

3.0 LITER, MAIN. 3.6 LITER. 4.0 LITER. 4.2 LITER. 5.0 LITER, MAIN. DIESEL, MAIN. Touareg.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.