Stud Bolt, M6x40, BMW - E30, E36, E28, E34, E24, E32, E38, E31, M1, M42, M30, M70, M73, S14, S38, S55

This part is listed by BMW as BMW part number 07129904546 (07 12 9 904 546) and is described as a M6x40mm stud used in multiple BMW engines for various uses - M42, M30, M70, M73, S14, S38, S55. Sold per stud.

Studs are a common replacement item - they are easily ruined by rust, oil, and other chemicals. They are easily cross-threaded or the nut and stud often come out together with the nut seized to the threads. It's always a good idea to have some spare studs on hand for an emergency or plan to replace a complete set any time.

This is a Genuine BMW M6x40 exhaust stud 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.