Due to an apparent manufacturing defect, the coolant expansion tank on the MINI Cooper tends to leak along the molding seam. This defect was supposedly fixed on cars from 2005-up, however it still seems to strike at random. When the car warms up, both the heat and pressure of the coolant starts to attack the seam along the edge of the tank, eventually causing it to fail and the car starts leaking coolant. The good news is that the replacement tank is relatively inexpensive and can be changed in under 30 minutes.

Easy project, you can do it! Check out Genuine MINI expansion tanks for both the Cooper & S models through ’08 HERE

Our tech article will walk you through the install:
MINI coolant expansion tank replacement

Mark/Pelican Parts