Head Bolt Set, Elring - F87 M2 Competition, F80 M3, F82 M4

Head Bolt Set includes Torx bolts of various sizes. 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.

This is an OEM Head Bolt Set for S55 engines manufactured by Elring Klinger - an original supplier to BMW for many gaskets and seals. As an OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.