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Genuine BMW
BMW Part Number12 31 1 432 988

Pulley alternator

D=55 mm · E36 318i, 320i, 323i & more · one of 4 sizes

Out of stock

One email when it is listed. Nothing else.

Free US shipping on orders over $75.00 · oversize quoted. Oversize items ship at a flat $49.99 each — free shipping does not cover them.

WARNING: Cancer and Reproductive Harm from exposure to lead — www.P65Warnings.ca.gov P65Warnings.ca.gov

Inspected and graded before it's listed · 30-day returns

Make sure this fits your car

Fits E36 318i–M3 & more · E46 320i, 323i, 323i 2.4, 328i 1990–2001

Select your vehicle to check fitment
See all 181 fitting cars
SedanM52AutomaticCB85
CoupeM52AllBM11

Other sizes · 4 in all

Pulley alternator – BMW diagram

Callout 01 on BMW’s drawing “Alternator, individual parts 80A”. Open the drawing →

Also shown on Alternator, individual parts 80A, ALTERNATOR PARTS 140A, ALTERNATOR PARTS 140A and 3 more.

Genuine BMW part 12 31 1 432 988: Pulley alternator. You will find it under Electrical (Alternator with motor and mounting). It supersedes the older number 12 31 1 703 736, so a part carrying that number is the same part.

Fits E36 318i, 320i, 323i, 325i, 328i and M3 (1992–1999) with the M43, M50, M52, S50 or S52 engines. Also fits E46 320i, 323i and 328i (1999–2005), sedan, coupe, convertible and touring, with the M52 engine.

BMW draws it on 25 drawings, among them two Alternator, individual parts 80A drawings. It weighs about 278 g (0.6 lb).

Out of stock. Request it and we will notify you when it is in stock.

Details

EnginesM43, M50, M52, S50, S52
Weight0.28 kg
OE / Cross-Reference
1126601590

Used parts are inspected and graded: Good (minimal wear), Fair (normal wear) or Acceptable (visible wear). All fully working. Returns: 30 days if a part arrives damaged or not as described.

BMW has renumbered this part. All of these numbers are the same part.

  • 12 31 1 432 988currentOut of stock
  • 12 31 1 703 736replaced by 12 31 1 432 988
  • 12 31 1 726 139replaced by 12 31 1 432 988

The other parts on BMW’s drawing “Alternator, individual parts 80A”. Open the drawing →

#PartIn stockAction
01Pulley alternator · this partOut of stock
02Voltage regulatorOut of stockRequest
03Intake manifoldOut of stockRequest
04Insulating coverOut of stockRequest
SedanM52AutomaticCB85
CoupeM52AllBM11

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InElectricalAlternator with motor and mounting