Check the listing for details. 4Pcs/Set Front Rear Brake Pads Wear Sensor For BMW 328i xDrive 330i 320i 335i M4. Condition: New. Listed at 26.88 USD. Features:Mounting location: brake caliper.Replaces part number: 34356792289, 34356792292.Placement on vehicle: front, left, rear, right.Function: the brake pad wear sensor is mainly to monitor the wear of the brake pads, convert the wear information into electrical signals, and transmit them to the vehicle's electronic control unit (ECU). After receiving the signal, the ECU will activate the alarm light to remind the driver that the brake pads need to be replaced.Direct fit: OE replacement brake pad wear sensor, direct plug-in installation. Quick and accurate warning information of wear conditions.Premium material: these brake pad wear sensors are made of quality ABS plastic material, high strength and durability, which has a long service life.Specificat.