Shop 2017 Audi A5 Engine Coolant Reservoir. 3.0L, PRIMARY. 4.0L, GT3 RS. 4.0L, GT3, PRIMARY. 911 PRIMARY, Cooling - OEM Audi Part # 992121402B (992-121-402-B, 992121402A)

Engine Coolant Reservoir. Expansion tank.
A container that holds Engine Coolant.

Engine Coolant Reservoir

Fits 911

3.0L, PRIMARY. 4.0L, GT3 RS. 4.0L, GT3, PRIMARY. 911. PRIMARY.
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.