Expansion Tank, OEM - F10 535d, F02 730LdX

A leak from your expansion tank can quickly turn into a major problem. The BMW plastic cooling components for the F10 535d and F02 740d have a tendency to leak along existing seams. Heat cycles and exposure to the elements can take their toll on any plastic component. While there is no replacement interval for these, we do encourage you to proactively replace cooling system components before a problem might develop.

This is an OEM coolant tank manufactured by Behr-Hella - the original supplier to BMW for this part, as well as many other cooling system components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.