2019 Audi S5 3.0L V6 A/T Premium Convertible Engine Coolant Reservoir Cap. RADIATOR CAP - 4M0121321Q

Engine Coolant Reservoir Cap. RADIATOR CAP.

Part Number: 4M0121321Q
Supersession(s): 4M0-121-321-Q; 4M0121321J; 4M0121321K

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A cover that prevents foreign debris from entering the container. From 06/15/2020. From 06/22/2020. From 11/21/2016. Location-Reservoir. Radiator Cap. To 06/15/2020. To 06/22/2020. To 11/21/2016. Included with: Reservoir, Reservoir tank.

Radiator CapEngine Coolant Reservoir Cap

Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2019 Audi S5 to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.