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3 Series Parts

Compact alternator

BMW Part Number:12 31 7 788 222
12317788222short number 7788222
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One email the moment one is listed — nothing else.

Fits E46 — 318d, 320d, 330d, 330xd
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Compact alternator – BMW diagram-- View BMW DiagramSee this part on the official exploded view

Genuine BMW part 12 31 7 788 222: Compact alternator. The number stamped on the part is 12317788222; BMW's catalog files it under the short number 7788222. You will find it on our Electrical shelf, under Alternator with motor and mounting. It supersedes the older number 7787346, so a part carrying that number is the same part. BMW has since replaced it with 7788247.

It fits the E46 sedan and touring (318d, 320d and 330d, 1998–2002), with the M47 or M57 engines.

BMW draws it on the ALTERNATOR PARTS 120A/150A Valeo (12_0914) diagram. BMW lists the quantity used as “as required”. It weighs about 7.4 kg (16 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 7 788 222
Also written as123177882227788222
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.