This part is listed by BMW as BMW part number 17122284689 (17 12 2 284 689) and is described as the hose on the side of the top-mount charge air cooler that connects to the expansion tank on the S55 engine in F87 M2 Competition, F80 M3, F82/F83 M4. In various diagrams this is labeled as hose #7.
This is a Genuine BMW S55 coolant 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.
BMW Fitments:
2 Series
F87 (2016-2021) > M2 CS Racing
F87 (2016-2021) > M2 Competition S55 (2019-2021)
3 Series
F80 (2015-2018) > M3 (2015-2018)
4 Series
F82 / F83 (2015-2020) > M4 (2015-2020)
F82 / F83 (2015-2020) > M4 GT4
F82 / F83 (2015-2020) > M4 GTS
