This part is listed by BMW as BMW part number 18207851181 (18 20 7 851 181) and is described as the hanger strap for the left / driver's side exhaust midpipe on F87 M2, F80 M3, and F82 M4.
This is a Genuine BMW exhaust strap 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.
F87 (2016-2021) > M2 CS Racing
F87 (2016-2021) > M2 Competition S55 (2019+)
F80 (2015-2018) > M3 (2015-2018)
F82 / F83 (2015-2020) > M4 (2015-2020)
F82 / F83 (2015-2020) > M4 GT4
F82 / F83 (2015-2020) > M4 GTS