Wheel Hub Mounting Screw, BMW - M12x1.25x45 - 31206872920

This Torx screw is what mounts the wheel hub / wheel bearing to the suspension spindle/upright. It screws in from the back of the suspension upright (usually 4 required per hub). BMW suggests replacing these screws with any new hub. It's a M12x1.25 thread with 45mm length and Torx/ISA head.

Wheel bearings on these cars were mounted with either this M12x1.25 bolt or a M12x1.5 bolt. Bearings/hubs and bolts must be matched together so you may not be able to re-use your existing bolts on a new hub. If your wheel bearing is from 2017 or newer it likely has the 1.25 thread pitch.

This is a Genuine BMW wheel bearing bolt 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.