Expansion Tank, BMW - E53 X5 4.4/4.8is N62

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 in the E53 X5 4.4/4.8is N62, we suggest inspecting and replacing this tank as a preventative measure.

Includes coolant level sensor.

This is a Genuine BMW 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.