Coolant Expansion Tank, BMW - F22 M235i, F87 M2 N55, F3X 328d/335i/435i

New coolant expansion tank for F22 M235i, F87 M2 (N55), F3X 328d/335i/435i.

It is very common for this expansion tank to get brittle and crack over time, leaking coolant, causing overheating, and potentially stranding you on the side of the road. The constant hot/cold temperatures and positive pressure of the cooling system stress the plastic until eventually a crack develops. If you are replacing any other part of the cooling system we suggest inspecting and replacing this tank as a preventative measure.

This is a Genuine BMW N55 expansion tank with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.