Expansion Tank-Thermostat-Heater Core Return Line, BMW - E82 135i/1M, E9X 335i

This part is listed by BMW as BMW part number 17127548230 (17 12 7 548 230) and is described as a return line for the Expansion Tank, Transmission Cooler Thermostat, and Heater Core on E82 135i and E9X 335i with automatic transmission. It also fits E82 1M (manual transmission).

This is a Genuine BMW return line 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.