Genuine OEM Audi Brake Pad Wear Sensor, part number 80A615121A. This sensor monitors the wear level of the brake pads, providing critical data to the vehicle's braking system. It is specifically designed for the front left wheel position. Weighing approximately 0.021 kg and measuring 0.31 meters in length, this sensor is built for durability. Genuine OEM sensors ensure exact calibration and signal characteristics for reliable and accurate brake wear detection.