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3 Series Parts

Voltage regulator

BMW Part Number:12 31 1 726 022
12311726022short number 1726022
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One email the moment one is listed — nothing else.

Fits E36 — 316i, 318i, 318is, 320i, 325i, 325is
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Voltage regulator – BMW diagram13 View BMW DiagramSee this part on the official exploded view

Genuine BMW part 12 31 1 726 022: Voltage regulator. The number stamped on the part is 12311726022; BMW's catalog files it under the short number 1726022. You will find it on our Electrical shelf, under Alternator with motor and mounting. It supersedes the older number 1711399, so a part carrying that number is the same part.

It fits the E36 sedan and coupe (318i, 320i and 325i, 1992–1999), with the M40, M42 or M50 engines — and the European-market versions.

BMW draws it on 111 diagrams, among them Alternator Parts 90a (12_0400) and Alternator Parts 65a (12_0484). It weighs about 58 g (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 Number12 31 1 726 022
Also written as123117260221726022
QualityGenuine BMW · OEM
OE / Cross-Reference
1197311027

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.