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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

Rotor

BMW Part Number:12 31 1 738 107
12311738107short number 1738107
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One email the moment one is listed — nothing else.

Fits E36 — 320i, 325i, 325is
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Rotor – BMW diagram09 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW rotor, part number 12 31 1 738 107. The number stamped on the part is 12311738107; BMW's catalog files it under the short number 1738107. You will find it on our Electrical shelf, under Alternator with motor and mounting.

It fits the E36 sedan and coupe (320i and 325i, 1992–1995), with the M50 engine.

BMW draws it on 4 diagrams, among them Alternator Parts 140a (12_0443) and Alternator Parts 140a (12_0450). It weighs about 2.8 kg (6.2 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 31 1 738 107
Also written as123117381071738107
QualityGenuine BMW · OEM
OE / Cross-Reference
1124035201

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.