This part is listed by BMW as BMW part number 51131961243 (51 13 1 961 243) and is described as the plug-in grommet for self-tapping screws. It's often used for license plate or trunklid mounting.
This is a Genuine BMW screw-in grommet 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.