Shop BMW M6 Engine Coolant Reservoir. 2.5 & 3.0 LITER W/O TURBO. 3.0 LITER W/TURBO. 4.4 & 4.8 LITER. 5 Expansion, LITER, Tank - OEM BMW Part # 17137542986 (17-13-7-542-986, 17137519219)

Reservoir. Expansion. Tank. Cooling water t. Engine Coolant.
A container that holds Engine Coolant.

Engine Coolant Reservoir

2.5 & 3.0 LITER W/O TURBO. 3.0 LITER W/TURBO. 4.4 & 4.8 LITER. 5 Series. 525i, 525xi, 530i, 530xi. 645Ci. All Models.
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.