Dorman 521-958 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-958 suspension control arm and ball joint assembly is engineered for reliable performance in select Cadillac, Chevrolet, and GMC trucks and SUVs. Designed to meet regular suspension grade requirements, this assembly offers a pre-greased, maintenance-friendly solution for restoring proper suspension function.

• Pre-greased control arm and ball joint for immediate use
• Includes rubber bushings and mounting hardware for complete installation
• Aluminum control arm with casting/forged construction for strength and reduced weight
• Press-in ball joint with threaded stud for secure mounting
• Compatible with multiple GM models including Chevrolet Silverado 1500 and GMC Sierra 1500

Technical Specifications and Features

This suspension control arm assembly features a black aluminum control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly includes a press-in ball joint with a 14 mm threaded stud and a 12.3 mm mounting hole diameter. Rubber bushings are pre-installed to absorb vibrations and reduce noise. The assembly is designed for light suspension grade applications and comes with all necessary mounting hardware for a straightforward replacement process.

Compatible Vehicles and Applications

This Dorman 521-958 control arm and ball joint assembly is compatible with a range of GM vehicles, including:

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche, Cheyenne, Silverado 1500, Suburban 1500, Tahoe
• GMC Sierra, Sierra 1500, Yukon, Yukon XL 1500

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 wheel alignment
• Loose or damaged mounting hardware resulting in suspension play
• Reduced suspension performance impacting ride comfort and handling

Installation Notes and Tips

Installation of the Dorman 521-958 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary during installation. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. This assembly is not adjustable, so proper fitment verification before installation is recommended.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-958 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to Dorman’s official documentation for exact warranty terms.