12 31 1 739 421Compact generator (exchange unit)
80A · E36 316i, 318i, 318is · one of 5 types
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Inspected and graded before it's listed · 30-day returns
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Fits E36 316i, 318i 1990–94 — M40, M42 engines
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Other types · 5 in all
Callout -- on BMW’s drawing “Alternator, individual parts 80A”. Open the drawing →
Also shown on Alternator.
This is a genuine BMW compact generator (exchange unit), part number 12 31 1 739 421. You will find it under Electrical (Alternator with motor and mounting). It supersedes the older numbers 12 31 1 721 923 and 12 31 1 727 576, so a part carrying any of them is the same part.
Fits E36 318i (1992–1999), sedan and coupe, with the M40 or M42 engines.
BMW draws it on 3 drawings, among them Alternator, individual parts 80A and Alternator. It weighs about 5.9 kg (13 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.
BMW has renumbered this part. All of these numbers are the same part.
12 31 1 739 421currentOut of stock12 31 1 721 692replaced by 12 31 1 739 42112 31 1 721 778replaced by 12 31 1 739 42112 31 1 721 921replaced by 12 31 1 739 42112 31 1 721 923replaced by 12 31 1 739 42112 31 1 727 576replaced by 12 31 1 739 421
The other parts on BMW’s drawing “Alternator, individual parts 80A”. Open the drawing →
| # | Part | In stock | Action |
|---|---|---|---|
| -- | Compact alternator · this part2 numbers at this callout | Out of stock | |
| 01 | Pulley | Out of stock | Request |
| 02 | Voltage regulator | Out of stock | Request |
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