Buy Audi S4 Cap. 3.7 LITER. 4 CYLINDER. 4.2 LITER, 1997-99. 4.2 LITER, 2000-03. 5 CYLINDER, cap. 6 LITER, RADIATOR - OEM Audi Part # 443121321 (443-121-321)

A cover that prevents foreign debris from entering the container. Exc.Air Cond. Location-Reservoir. Mexico Built Vehicle. Radiator Cap. To Chassis/VIN 1G-L-006 600. To Chassis/VIN 8D-T-308 000. To Chassis/VIN 8D-T-309 402. Closure. Cover. Engine Coolant Reservoir. Expansion tank. Radiator.

Radiator CapEngine Coolant Reservoir Cap

Fits S4 (1992 - 1994)

3.7 LITER. 4 CYLINDER. 4.2 LITER, 1997-99. 4.2 LITER, 2000-03. 5 CYLINDER, cap. 6 CYLINDER, 2.8 LITER. W/o AC.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your Audi S4 to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.