Shop 2017 Audi A4 Tank. Engine Coolant Expansion Tank - Repair or Replace A failed expansion tank can Engine, Expansion, Cause - OEM Audi Part # 8W0121405F (8W0-121-405-F, 8W0121405E, 8W0121405G)

Fits A4, A4 allroad, A5, A5 Sportback

Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 2017 Audi A4 to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.