Its a rubber piece that holds the control arm to the frame of the vehicle it is round like the control arm to allow the arm to flex. (The control arm holds the wheel to the frame and uses the control...
The lower control arm bushing would be located at the inner pivot point where the lower control arm is mounted to the frame/crossmember. Depending on your vehicle it could have one or two bushings....
You have to remove the lower or upper control arm (what bushings are bad), using wrenches and a pickel fork to separate the ball joints. You then take the arm to a hydraulic press and press out the...