Crankshaft Pulley/Damper Bolt, BMW - E46, E39, Z3, Z4, M52TU, M54

This part is listed by BMW as BMW part number 11211720633 (11 21 1 720 633) and is described as the 22mm hex bolt used to secure the vibration damper pulley to the crankshaft on M52TU and M54 engines for E46, E39, E60, X3, X5, Z3, Z4 models. BMW calls for a new bolt whenever this is loosened or removed. It's torqued to 410Nm (302ft-lbs) so it requires the appropriate pulley tool and torque wrench to reinstall. The spacer behind the bolt is sold separately.

This is a Genuine BMW crank 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.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.