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FREE SHIPPING on US orders over $75 (oversize excepted) • Quality used E36 & E46 parts • Every part inspected & graded
3 Series Parts

Ball bearing

BMW Part Number:12 31 3 909 100
12313909100short number 3909100
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Ball bearing – BMW diagram15 View BMW DiagramSee this part on the official exploded view

Ball bearing — a genuine BMW part, number 12 31 3 909 100. The number stamped on the part is 12313909100; BMW's catalog files it under the short number 3909100. 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 the Generator, individual parts (12_0160) diagram.

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 3 909 100
Also written as123139091003909100
QualityGenuine BMW · OEM

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.