This came off my personal 1998 bmw M3. This is the traction control throttle body or secondary throttle body. This unit had 85k miles when pulled and worked just fine. This unit is used for traction control actuation as well as its relation to the ABS system. Will work on all M3’s sedan or coupe 96-99 with the s52 motor. This is complete with the throttle position sensor, and the actuator cable and motor.