Crankshaft Position Sensor (TDC), Bosch - E30 325e/325i, E28 528e, M20

This part is listed by BMW as BMW part number 12521279695 (12 52 1 279 695) and is described as a front crankshaft position sensor for early E30 and E28 models with the M20 engine - 325e, 325es, 1987 325i, 1987 325is, 1987 325iX, and 528e. This is the sensor that clips onto the front timing cover and has a 3-pin plug at the other end for the Motronic ECU harness (see image above). It's 470mm (18.5") long.

This is an OEM E30 front crank sensor manufactured by Bosch - the original supplier to BMW for this part, as well as many other sensors and electronics. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.

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