Shop 2017 Audi A5 Cap. Engine Coolant Expansion Tank - Repair or Replace A failed expansion tank can Engine, Expansion, Cause - OEM Audi Part # 4D0121324 (4D0-121-324, 8J0121324)

Engine Coolant Reservoir Cap

Fits A8, S4

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.