Shop 2010 BMW M6 Engine Coolant Reservoir. 2.0 LITER, AUXILIARY RADIATOR. 3.0 LITER, AUXILIARY. 3.0 Radiator, Auxiliary - OEM BMW Part # 17139454333 (17-13-9-454-333)

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

Engine Coolant Reservoir

Fits 530i, 530i xDrive, 540i xDrive, 740i, 750e xDrive

2.0 LITER, AUXILIARY RADIATOR. 3.0 LITER, AUXILIARY. 3.0 LITER, AUXILIARY RADIATOR. 740i.
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.