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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

Bottom part

BMW Part Number:12 90 7 521 578
12907521578short number 7521578
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One email the moment one is listed — nothing else.

Genuine BMW Part

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Bottom part — a genuine BMW part, number 12 90 7 521 578. The number stamped on the part is 12907521578; BMW's catalog files it under the short number 7521578. You will find it on our Electrical shelf, under Other Engine Electrical System parts. BMW has since replaced it with 7534921.

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

It weighs about 670 g (1.5 lb).

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 90 7 521 578
Also written as129075215787521578
QualityGenuine BMW · OEM

No fitment data available for this part.

This part isn't shown in any diagrams.

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.