12 31 7 831 434Pulley alternator
D=53.2 mm · one of 4 sizes
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Inspected and graded before it's listed · 30-day returns
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Fits E46 M3 2000–03 — S54 engine
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Other sizes · 4 in all
Callout 01 on BMW’s drawing “Alternator parts 120A/140A Valeo”. Open the drawing →
Genuine BMW part 12 31 7 831 434: Pulley alternator. You will find it under Electrical (Alternator with motor and mounting).
Fits E46 M3 (2001–2006), coupe and convertible, with the S54 engine.
BMW draws it on 2 drawings, among them two Alternator parts 120A/140A Valeo drawings. It weighs about 372 g (0.8 lb).
Out of stock. Request it and we will notify you when it is in stock.
Details
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.
The other parts on BMW’s drawing “Alternator parts 120A/140A Valeo”. Open the drawing →
| # | Part | In stock | Action |
|---|---|---|---|
| 01 | Pulley alternator · this part2 numbers at this callout | Out of stock | |
| 02 | Voltage regulator2 numbers at this callout | Out of stock | Request |
| 03 | Cap2 numbers at this callout | Out of stock | Request |
| 04 | Hex Bolt | Out of stock | Request |
| 05 | Hex Bolt | Out of stock | Request |
| 06 | Air channel lower | Out of stock | Request |
| 07 | Hose clamp2 numbers at this callout | Out of stock | Request |
| 08 | Cap nut | Out of stock | Request |
| 09 | Air channel upper2 numbers at this callout | Out of stock | Request |
| 10 | Air channel lower2 numbers at this callout | Out of stock | Request |
| 11 | Air channel | Out of stock | Request |
| 12 | Hex head screw | Out of stock | Request |
| 13 | Expanding nut | Out of stock | Request |
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