There are many different engines that BMW produced but even more so there are different variations of certain engine models. Even when you get down to something as specific as s50b32 (s50 engine which is 3.2 liters) there is 2 sub branches :
326S1 01 A, Part #: 11 00 1405257, S50B32
326S3 02 A, Part # 11 00 1405547 S50B32
In this PDF you will find the following engines covered:
M10 Page: 09-10
M20 Page: 11-12
M21 Page: 13
M30 Page: 14-16
M40 Page: 17
M41 Page: 18
M42 Page: 18
M43 Page: 19
M44 Page: 19
M47 Page: 20
M50 Page: 20-21
M51 Page: 21-22
M52 Page: 22-23
M57 Page: 24
M60 Page: 24-25
M62 Page: 26
M67 Page: 27
M70 Page: 27
M73 Page: 28
S14 Page: 29
S38 Page: 30
S50 Page: 31
S52 Page: 31
S62 Page: 32
S70 Page: 32
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