Lower Main Bearing Shell, Green, BMW - G8X, F97, F98 (S58)

This part is listed by BMW as BMW part number 11218588655 (11 21 8 588 655) and is described as a lower main bearing shell for S58 engines used in G8X M2/M3/M4, F97 X3M, F98 X4M. This is an lower shell, with a green color code and is the standard 55.00mm size.

Important Bearing ID Note: BMW has a different way of identifying main and rod bearings. Locate a letter code on the passenger side of the engine block and combine that with a letter on the front of the crankshaft. There are 9 different combinations using 3 colors. It would not be unusual to have a mix of codes and colors. Note that bearing position 4 is the thrust bearing shells and are different part number than the rest.

This is a Genuine BMW S58 main bearing shell 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.

BMW Fitments:

3 Series
G80 (2021-) > M3 (2021-)
G80 (2021-) > M3 Competition RWD (2021-)
G80 (2021-) > M3 xDrive Competition (2021-)
4 Series
G82 / G83 (2021-) > M4 (2021-)
G82 / G83 (2021-) > M4 Competition RWD (2021-)
G82 / G83 (2021-) > M4 xDrive Competition (2021-)
X3 Series
F97 X3M (2020+) > X3M
X4 Series
F98 X4M (2020+) > X4M