idler arm

Hello, One side has a pitman arm, and the other has an idler arm. The pitman arm will have one end that slides onto the steering gear, and the other end is a ball-in-socket joint (like a tie rod). The idler arm will be bolted to the frame of the vehicle, and only moves as a result of moving the centerlink. The difference between them should be obvious now, and if that did not address your concern, let me know, and provide more information. Thanks.