Brake Pad Wear Sensor, Aftermarket - E21 E12 E28 E24 E23

Replacement wear sensor for brake pads - Required when low-brake warning light is illuminated

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This part is listed by BMW as BMW part number 34351179821 (34-35-1-179-821) and is described as Brake Pad Wear Sensor for E21, E12, E28, E24, and E23.

Depending on application, this sensor may be used on the front or rear position.

Detailed fitment list:
E21 3-series: Front Only
E12 5-series: Front/Rear
E28 5-series: Rear Only
E24 630CSi: Front/Rear
E24 633/635/M6: Rear Only
E23 7-series: Front/Rear

Brake Wear Sensors are key safety components that allow worry-free driving without the need for constant visual inspection of your brake pad material. Once the brake lining dash light is illuminated on your dash, this is a warning of thin brake pad material. Pads should be replaced as soon as possible, and the sensor is a required replacement once the brake lining dash has come on.

  • Precise factory fitment
  • Worry-free driving until dash light illuminates
  • One sensor required per axle 

TECH NOTE: On a majority of applications the brake lining light can be reset easily by installing a new sensor and turning the ignition to the second position (without starting the car) for approximately one minute - or until the light goes out. Refer to your Bentley service manual for further instruction if this method doesn't work.

Supersedes the following BMW part numbers:
34351180780 (34-35-1-180-780)
61311361896 (61-31-1-361-896)
34212225229 (34-21-2-225-229)

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.

BMW Fitments:

3 Series
E21 (75-83) > 320i
5 Series
E12 (77-81) > 528i
E12 (77-81) > 530i
5 Series
E28 (82-88) > 524td
E28 (82-88) > 528e
E28 (82-88) > 533i
E28 (82-88) > 535i
E28 (82-88) > M5 (87-88)
6 Series
E24 (77-89) > 630CSi
E24 (77-89) > 633CSi
E24 (77-89) > 635CSi
E24 (77-89) > M6
7 Series
E23 (77-87) > 733i
E23 (77-87) > 735i
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