Dorman 521-231 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Reliable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-231 suspension control arm and ball joint assembly is engineered for Lexus Land Cruiser and Toyota LX470 models. Designed to restore proper suspension function, this assembly combines durability with precise fitment for light suspension grade applications.

• Pre-greased for immediate installation
• Includes rubber bushings and mounting hardware
• Steel control arm with casting/forged construction
• Press-in ball joint with pinch stud type installed
• Compatible with Lexus Land Cruiser and Toyota LX470

Durable Construction and Design Features

This Dorman suspension control arm and ball joint assembly (part number 521-231) features a black steel control arm built with casting and forging methods to ensure strength and longevity. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to provide vibration dampening and reduce noise, while the press-in ball joint with a pinch stud design is factory installed for a secure fit. The control arm measures up to 288.5 mm in width and 237 mm in length, with a single mounting hole of 12.3 mm diameter for precise alignment. This assembly is designed for light suspension grade use, suitable for regular driving conditions on Lexus Land Cruiser and Toyota LX470 vehicles.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is specifically compatible with the following vehicles:

• Lexus Land Cruiser
• Toyota LX470

It is intended to replace worn or damaged control arms and ball joints, restoring proper suspension geometry and vehicle handling.

Common Suspension Issues Addressed

• Excessive play or looseness in the front suspension
• Uneven tire wear caused by misaligned control arms
• Clunking or knocking noises during driving over bumps
• Reduced steering responsiveness or stability
• Vibration or harshness transmitted through the suspension

Installation Notes and Tips

Installation of the Dorman 521-231 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 direct installation. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all mounting hardware to manufacturer specifications. No grease fitting is included, so no additional lubrication is necessary after installation. It is recommended to have a professional alignment performed after replacement to maintain proper suspension geometry.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-231 suspension control arm and ball joint assembly undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official documentation for exact warranty terms.