Shop OEM BMW Part # 17138610654 (17-13-8-610-654). Engine Coolant Reservoir. 3.0 LITER DIESEL. 540d xDrive. Engine Coolant Expansion Tank - Repair or Replace A failed expansion tank can

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

Engine Coolant Reservoir

Fits 530i, 540d xDrive, 540i

3.0 LITER DIESEL. 540d xDrive.
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.