Shop 2011 Audi A5 Cover. Engine Coolant Reservoir Cap. Radiator Cap. 4.2 LITER. 6.0 LITER. Engine LITER, Cause, Cooling - OEM Audi Part # 3D0121321B (3D0-121-321-B, 3D0121321)

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

Radiator CapEngine Coolant Reservoir Cap

Fits Phaeton

4.2 LITER. 6.0 LITER.
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.