Expansion Tank / Thermostat Hose, BMW - F22 M240i, F30 340i, F32 440i, B58

This part is listed by BMW as BMW part number 17128616558 (17 12 8 616 558) and is described as the hose from the main expansion tank to the thermostat / heat management module and the A/C drier on F22 M240i, F30 340i, F32 440i models with the B58A engine and an automatic transmission.

This is a Genuine BMW B58 cooling hose 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.