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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

O-ring

BMW Part Number:23 12 1 204 578
23121204578short number 1204578
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

O-ring – BMW diagram05 View BMW DiagramSee this part on the official exploded view

What's Included

This is a genuine BMW O-ring, part number 23 12 1 204 578. The number stamped on the part is 23121204578; BMW's catalog files it under the short number 1204578. You will find it on our Transmission shelf, under Bearing in housing, sealing rings.

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

BMW draws it on 12 diagrams, among them Getrag 242 Housing+attaching Parts (23_0122) and Getrag 242 Housing+attaching Parts (23_0123). It also comes in BMW kit Gasket Set F Four Speed Gearbox "af" (9065645).

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 Number23 12 1 204 578
Also written as231212045781204578
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.