Dorman 521-071 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-071 suspension control arm and ball joint assembly is designed specifically for Lexus LS430 models. This pre-greased, aluminum control arm assembly offers a reliable replacement solution for light suspension grade applications, ensuring proper vehicle handling and stability.

• Pre-greased for immediate installation
• Includes rubber bushings and mounting hardware
• Aluminum control arm with black finish
• Press-in ball joint with pinch stud type installed
• Compatible with Lexus LS430 suspension systems

Detailed Product Features and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-071) features a casting/forged aluminum control arm designed for durability and corrosion resistance. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. It includes rubber bushings to absorb road vibrations and reduce noise, along with mounting hardware for a complete replacement. The ball joint is press-in mounted with a pinch stud type and is installed and ready for use. The control arm measures a maximum length of 237 mm and a maximum width of 288.5 mm, with a single mounting hole diameter of 12.3 mm, ensuring precise fitment for the Lexus LS430 suspension system.

Compatible Vehicles and Application

This suspension control arm and ball joint assembly is compatible with the Lexus LS430, providing a direct replacement for worn or damaged suspension components. It is designed for light suspension grade use, making it suitable for standard driving conditions and maintaining the vehicle's original handling characteristics.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Suspension noise due to degraded rubber bushings
• Reduced vehicle handling and alignment problems
• Corrosion or damage to original aluminum control arms

Installation Notes and Tips

Installation of the Dorman 521-071 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and the control arm is pre-greased, the assembly is ready for immediate installation. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. No grease fitting is included, so no additional lubrication is necessary after installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. This suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their suspension components. Refer to Dorman’s official documentation for exact warranty terms.