This part is listed by BMW as BMW part number 13627839138 (13-62-7-839-138) and is described as Crankshaft Sensor for M62, S62, S65, S85, and M73 engines.
Commonly referred to as the Speed Sensor, Reference Sensor, or Pulse Generator, this sensor feeds a signal to the car's ECU and can cause poor running or no-start conditions if a failure occurs.
Supersedes BMW part # 12141742629 (12-14-1-742-629).
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BMW Fitments:
3 Series
E90 / E91 / E92 / E93 (06-13) > M3
5 Series
E39 (97-03) > 540i
E39 (97-03) > M5 (00-03)
5 Series
E60 / E61 (04-10) > M5
6 Series
E63 / E64 (04-10) > M6
7 Series
E38 (95-01) > 740i
E38 (95-01) > 740iL
8 Series
E31 (91-97) > 840Ci
Z Series
E52 Z8 (00-03) > Z8 Roadster (2000-2003)