Description Reviews MINI Cooper S Expansion Tank Cap! These fail from time to time on R52 or R53 MINI Cooper S's. MINI updated the cap and the inside and the seal a while ago. You can tell by the bright blue seal inside of it. This is a brand new OEM design, but a Quality Aftermarket part.
On Sale! Quick view Choose Options Detroit Tuned MINI Aluminum Expansion Tank Kit G1 Was: $156.25 Now: $124.95