M5x BMW Coolant Expansion Tank - 17111723520

The coolant expansion tank on the M5x engines are a crucial part to your cooling system.  Unfortunately BMW made these out of plastic and over time can develop cracks from the heat.  This is a must do replacement when maintaining your cooling system.  Replace yours today with this new OE replacement.

*Note: This does not come with a new reservoir cap.  you will need to purchase a new one or reuse the one on your car.

Replaces BMW PN 17111723520

Fitment: