Upper Control Arm

DESCRIPTION






The rear upper control arm used on this vehicle is a high strength aluminum casting. It contains the rear upper ball joint, which is threaded into the upper control arm.
The upper control arm is attached to the rear knuckle of the vehicle through a tapered stud which is part of the upper ball joint. The upper control arm is mounted to the upper frame rail of the vehicle through two rubber isolator bushings.
The replaceable components of the upper control arm are the isolator bushings and the ball joint seal boot.

OPERATION
The upper control arm supports the upper end of the rear knuckle through the use of an upper ball joint. Working in conjunction with the lower control arm, the upper control arm allows for the up and down movement of the front suspension during jounce and rebound travel.