This barometric pressure sensor is used in the fuel injection system on BMW M10, M20 ETA, S14, and S38 engines. Applications include E30 318i (1984-1985), E30 M3 (1987-1991), E28 528e (1982-1988), E28 M5 (1987-1988), and E24 M6 (1987-1989).
This part is listed by BMW as BMW part number 13621286679 (13-62-1-286-679) and is described as Bosch 0280101001 Barometric Pressure Sensor.
BMW Fitments:
3 Series
E30 (84-91) > 318i
E30 (84-91) > 325e
E30 (84-91) > 325es
E30 (84-91) > M3
5 Series
E28 (82-88) > 528e
E28 (82-88) > M5 (87-88)
6 Series
E24 (77-89) > M6