Dorman 521-011 Suspension Control Arm and Ball Joint Assembly - Rear Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-011 suspension control arm and ball joint assembly is engineered for reliable performance in select GM vehicles. Designed with pre-greased components and rubber bushings, this assembly supports smooth suspension operation for Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn models.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for vibration dampening
• Aluminum control arm with black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Compatible with Buick Aztek, Chevrolet Montana, Relay, Rendezvous, Silhouette, Terraza, and Saturn Uplander

Technical Specifications and Features

This suspension control arm and ball joint assembly features a casting/forged aluminum control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly comes pre-greased and includes rubber bushings to absorb road shocks and reduce noise. The ball joint is press-in mounted with a 14 mm threaded stud and a 12.3 mm mounting hole diameter, ensuring a secure fit. Mounting hardware is included to facilitate installation without additional parts.

Compatible Vehicles and Applications

The Dorman 521-011 is compatible with a range of GM vehicles, including Buick Aztek, Chevrolet Montana, Relay, Rendezvous, Silhouette, Terraza, and Saturn Uplander models. This assembly is designed for light suspension grade applications, making it suitable for regular driving conditions and daily use.

• Replaces worn or damaged control arms and ball joints
• Addresses suspension noise and vibration issues
• Corrects steering instability or uneven tire wear
• Restores proper wheel alignment and handling

Installation Notes and Tips

Installation of the Dorman 521-011 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and press-in mounted, no separate ball joint replacement is necessary. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. The assembly is not adjustable, so proper fitment is critical.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-011 assembly includes pre-greased parts and durable rubber bushings to extend service life. While specific warranty details vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.