Dorman 524-701 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

OE-Style Front Left Upper Control Arm

Dorman 524-701 is a direct replacement suspension control arm and ball joint assembly for specific vehicles, including the 2001-2006 Lexus LS430 front left upper position. It is built for smooth ride quality, directional stability, and predictable steering response on the Lexus LS430.

Key Features

• Direct replacement for the original equipment control arm assembly
• Pre-greased ball joint with the ball joint already installed
• Aluminum control arm construction with rubber bushings
• Machined ball joint mounting and threaded stud design
• Mounting hardware included for installation
• Black finish with regular/light suspension grade construction

Detailed Description

This Dorman suspension control arm and ball joint assembly is engineered for the front left upper suspension position on the 2001-2006 Lexus LS430, wo/Sport Package. The aluminum arm, rubber bushings, and pre-greased ball joint are selected to restore OE-style suspension geometry and steering feel. Dorman 524-701 is a practical replacement when the original upper control arm shows wear, looseness, or noise.

This part cross-references MOOG Chassis Products RK641531 for the same application.

What It Helps Fix

• Front-end clunking or knocking from a worn upper control arm
• Excessive play from a loose or worn ball joint
• Uneven tire wear caused by suspension wear
• Steering wander or reduced directional stability
• Ride quality changes from deteriorated bushings

Installation Notes and Tips

Fits 2001-2006 Lexus LS430, front left upper, wo/Sport Package. Verify suspension configuration before ordering, since this application excludes Sport Package vehicles. Inspect adjacent suspension components, alignment settings, and mounting points during replacement. Dorman 524-701 includes the ball joint installed and is pre-greased, which helps streamline installation on the Lexus LS430 front suspension.

Quality Assurance

Dorman uses an industry-focused evaluation process to validate fit, function, and suspension performance for direct replacement parts. This helps support consistent ride quality, stable handling, and predictable dynamics in the intended application.