Dorman 521-012 Suspension Control Arm and Ball Joint Assembly - Rear Right Lower

Reliable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-012 suspension control arm and ball joint assembly is engineered for light suspension grade applications. Designed specifically for select Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn models, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate use
• Includes rubber bushings and mounting hardware
• Aluminum control arm with black finish
• Press-in ball joint with threaded stud installed
• Compatible with Buick Aztek, Chevrolet Montana, Relay, Rendezvous, Silhouette, Terraza, and Uplander

Durable Construction and Design Features

This suspension control arm and ball joint assembly from Dorman is crafted from forged and cast aluminum, providing a balance of strength and lightweight performance. The control arm measures up to 288.5 mm in width and 237 mm in length, finished in black for corrosion resistance. The assembly comes pre-greased and includes rubber bushings to absorb road vibrations and reduce noise. The ball joint is press-in mounted with a 14 mm threaded stud, ensuring secure attachment and reliable steering response. Mounting hardware is included for straightforward installation.

Compatible Vehicles and Applications

This part number 521-012 is compatible with a range of GM vehicles, including Buick Aztek, Chevrolet Montana, Relay, Rendezvous, Silhouette, Terraza, and Uplander models. It is designed for light suspension grade use, making it suitable for regular driving conditions and helping maintain proper suspension geometry and handling characteristics.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Corroded or bent control arms affecting alignment
• Loose or missing mounting hardware compromising suspension integrity
• Reduced suspension performance due to lack of lubrication

Installation Notes and Tips

Installation of the Dorman 521-012 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, no additional lubrication is necessary during assembly. Ensure the mounting hole diameter of 12.3 mm aligns with the vehicle’s frame, and torque all mounting hardware to manufacturer specifications. This assembly is not adjustable, so proper alignment should be verified after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-012 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to Dorman’s official documentation for complete warranty information.