12 21 8 591 724Preheating control unit
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Inspected and graded before it's listed · 30-day returns
Callout 02 on BMW’s drawing “GLOW PLUG UNIT”. Open the drawing →
Genuine BMW part 12 21 8 591 724: Preheating control unit. You will find it under Electrical (ALTERNATORMOUNTING PARTS). It supersedes the older number 12 21 7 800 156, so a part carrying that number is the same part.
BMW's catalog records no E36 or E46 it is fitted to; it belongs to other BMW models.
BMW draws it on 2 drawings, among them two Glow Plug Unit drawings.
Out of stock. Request it and we will notify you when it is in stock.
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 21 8 591 724current12 21 7 800 156replaced by 12 21 8 591 724
The other parts on BMW’s drawing “GLOW PLUG UNIT”. Open the drawing →
| # | Part | In stock | Action |
|---|---|---|---|
| 01 | Glow element2 numbers at this callout | Out of stock | Request |
| 02 | Preheating control unit · this part4 numbers at this callout | Out of stock | |
| 03 | Bracket, relay, glow plug2 numbers at this callout | Out of stock | Request |
| 04 | Tubing support | Out of stock | Request |
| 05 | Socket housing | Out of stock | Request |
No fitment data available for this part.
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