Disc Brake Pad Wear Sensor. Part Numbers: 084-1606, 10072, 10077, 1410059, 1410164, 20072, 20077, 2BWS0200, 34 35 6 789 440, 34356777649, 34356789440, 355251961, 524 06071 099, 524 06071 345, 524 06071, 5S11535, DF0003, PWS108, SEN-2BWS0200, URO-002644, WK641, WS308, WSA3162.