Compact alternator
12 31 7 509 10012317509100·short number 7509100Genuine BMW Part
Photos coming soon — see the BMW diagram below
-- View BMW DiagramSee this part on the official exploded view→This is a genuine BMW compact alternator, part number 12 31 7 509 100. The number stamped on the part is 12317509100; BMW's catalog files it under the short number 7509100. You will find it on our Electrical shelf, under Alternator with motor and mounting.
It fits the E46 sedan, coupe and touring (316i, 316i 1.6, 316i 1.9 and 318i, 1997–2001), with the M43 engine.
BMW draws it on the ALTERNATOR PARTS 90A Bosch (12_0901) diagram. BMW lists the quantity used as “as required”. It weighs about 5.7 kg (13 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
Details
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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.