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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

Non return flap

BMW Part Number:54 12 1 837 850
54121837850short number 1837850
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Non return flap – BMW diagram18 View BMW DiagramSee this part on the official exploded view

Genuine BMW part 54 12 1 837 850: Non return flap. The number stamped on the part is 54121837850; BMW's catalog files it under the short number 1837850. You will find it on our Exterior Body shelf, under Other Sliding Roof / Folding Top parts.

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

BMW draws it on 8 diagrams, among them Single Parts for Sliding Lifting Roof (54_0004) and Single Parts for Sliding Lifting Roof (54_0005). It weighs about 7 g (under 0.1 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 Number54 12 1 837 850
Also written as541218378501837850
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.