Head Bolt Set, Genuine BMW - E46 M3, MZ3 S54, Z4 M

Set includes 14 Torx head bolts for S54 engine used in E46 M3, 2001-2002 MZ3 S54, and Z4M.

New head bolts are required any time the head bolts have been loosened or removed for any reason. They stretch when properly tightened so re-using them again will not tighten the head and gasket all the way. These are stock replacement head bolts, for cars with stock compression. For forced induction, or any car that has the head removed on a regular basis, we strongly recommend an ARP Head Stud Kit. ARP head studs are re-usable and stronger. But for a street car or daily driven E46 M3, MZ3, and Z4M these stock replacement bolts are the recommendation.

Set includes 14 Torx head bolts. Hardened steel washers are sold separately.

This is a Genuine BMW S54 head bolt set 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.