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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

Reducer

BMW Part Number:11 63 1 278 833
11631278833short number 1278833
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One email the moment one is listed — nothing else.

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Reducer – BMW diagram10 View BMW DiagramSee this part on the official exploded view

Genuine BMW part 11 63 1 278 833: Reducer. The number stamped on the part is 11631278833; BMW's catalog files it under the short number 1278833. You will find it on our Engine shelf, under Other Engine parts.

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

BMW draws it on 14 diagrams, among them Volume air flow sensor (13_0226) and Volume air flow sensor (13_0227). It weighs about 4 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 Number11 63 1 278 833
Also written as116312788331278833
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.