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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

Diode assy

BMW Part Number:12 31 1 735 307
12311735307short number 1735307
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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

Diode assy – BMW diagram08 View BMW DiagramSee this part on the official exploded view

Genuine BMW part 12 31 1 735 307: Diode assy. The number stamped on the part is 12311735307; BMW's catalog files it under the short number 1735307. 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 9 diagrams, among them Alternator Parts 90a (12_0400) and Alternator Parts 90a (12_0438). It weighs about 250 g (0.6 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 1 735 307
Also written as123117353071735307
QualityGenuine BMW · OEM

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.