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3 Series Parts

Alternator 90A

BMW Part Number:12 31 1 735 121
12311735121short number 1735121
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Alternator 90A – BMW diagram-- View BMW DiagramSee this part on the official exploded view

Genuine BMW part 12 31 1 735 121: Alternator 90A. The number stamped on the part is 12311735121; BMW's catalog files it under the short number 1735121. You will find it on our Electrical shelf, under Alternator with motor and mounting.

BMW's catalog records no E36 or E46 it is fitted to; it belongs to other BMW models.

BMW draws it on 3 diagrams, among them Alternator Parts 90a (12_0440) and Alternator Parts 90a (12_0441).

We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.

Details

BMW Part Number12 31 1 735 121
Also written as123117351211735121
QualityGenuine BMW · OEM
OE / Cross-Reference
0120469912

No fitment data available for this part.

Every used part is inspected and graded before listing. Condition grades:

  • Good — minimal wear, fully functional.
  • Fair — normal wear, fully functional.
  • Acceptable — visible wear, still functional.

Returns: 30 days if a part arrives damaged or isn't what the listing described. Full policy.

Shipping: Ships within the US. Orders ship within 1–2 business days; small parcels ship free on orders of $75.00 or more. Oversize items ship at a flat $49.99 each — free shipping does not cover them.