This part is listed by BMW as BMW part number 32411264642 (32 41 1 264 642) and is described as the mounting support bracket for the alternator in E21 323i, E30 325e/325i, and E28 528e. This is the large bracket that bolts to the M20 engine block.
This is a Genuine BMW alternator bracket 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
E21 (75-83) > 323i
3 Series
E30 (84-91) > 325e
E30 (84-91) > 325es
E30 (84-91) > 325i
E30 (84-91) > 325is
E30 (84-91) > 325ix
5 Series
E28 (82-88) > 528e