Cylinder Head Bolt Washer, BMW - E46 M3, MZ3 S54, Z4M

This is the hardened steel washer that sits under the cylinder head bolts on S54 engines used in E46 M3, 2001-2002 MZ3 S54, and E85/E86 Z4M. The steel washer can typically be reused but it ends up as a 'while you're in there' replacement item. Having a fresh washer with each bolt helps ensure the proper torque specs are met when bolting down the head.

Sold per washer.

This is a Genuine BMW head bolt washer 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.