Dorman 521-372 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Overview of Dorman Suspension Control Arm 521-372

The Dorman Suspension Control Arm and Ball Joint Assembly 521-372 is designed for reliable suspension performance on select Lexus and Toyota models. Engineered to meet regular grade suspension requirements, this control arm assembly is compatible with vehicles such as the Lexus GX460, GX470, and Toyota 4Runner and FJ Cruiser.

• Control arm made from durable steel with a black finish
• Includes rubber and steel bushings for enhanced suspension stability
• Machined ball joint with threaded stud and installed for convenience
• Mounting hardware included for straightforward installation
• Designed for light suspension grade applications

Detailed Product Description

This Dorman control arm assembly (part number 521-372) features a casting/forged steel construction that provides structural integrity and durability. The control arm measures up to 288.5 mm in width and 237 mm in length, ensuring proper fitment and alignment. It comes with pre-installed ball joints that have a 14 mm threaded stud diameter and a machined mounting type, which supports secure attachment and smooth steering response. The assembly includes both rubber and steel bushings to absorb road vibrations and maintain suspension geometry. Although the control arm is not greaseable and does not include a grease fitting, it is designed for maintenance-free operation. The package contains one control arm with one mounting hole of 12.3 mm diameter and all necessary mounting hardware for installation.

Compatible Vehicles and Applications

This suspension control arm assembly is compatible with the following vehicles:

• Lexus GX460
• Lexus GX470
• Toyota 4Runner
• Toyota FJ Cruiser

It is intended for use in light suspension grade applications where regular grade control arms are required.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Loose or failing ball joints leading to steering instability
• Corroded or bent control arms affecting wheel alignment
• Excessive suspension noise or vibration
• Uneven tire wear due to suspension component wear

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before removal
• Compare new control arm dimensions with the original part for fitment
• Torque mounting hardware to manufacturer specifications
• Check alignment after installation to maintain proper handling
• Since the ball joint is pre-installed and non-greaseable, no additional lubrication is required

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-372 control arm assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship.