This part is listed by BMW as BMW part number 33509909440 (33 50 9 909 440) and is described as M8 26mm screw commonly used for rear shock mounts. Sold per screw.
This is a Genuine BMW M8 screw 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.