For use in ESP1.0, non-iBoost/non-Driver's Assist, RWD (coil and air suspension) and Dual Motor (coil suspension) vehicles only. OK to use A. Must use with ESP1.0 wheel speed sensor, 6006366-00-B, or ESP2.0 wheel speed sensor 1037796-00-B. Must match pedigree of opposite side (6007023-00-B). When replacing knuckles on RWD vehicles with 1042506* (LH) 1042507* (RH) ensure that the flowing parts are also updated: Hub assembly to 1027170-00-B, Wheel Speed Sensor to 1082929-00-A