Dorman 521-591 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-591 suspension control arm and ball joint assembly is engineered for Chevrolet Canyon and GMC Colorado models. Designed to restore proper suspension function, this assembly comes pre-greased and includes all necessary mounting hardware for a straightforward installation.

• Pre-greased control arm and ball joint for immediate use
• Includes grease fitting for easy maintenance
• Light suspension grade type suitable for regular driving conditions
• Durable steel boxed control arm construction in black finish
• Rubber bushings included to reduce vibration and noise
• Bolt-in ball joint with threaded stud for secure mounting
• Mounting hardware included for complete assembly replacement
• Compatible with Chevrolet Canyon and GMC Colorado models

Product Features and Specifications

The Dorman 521-591 control arm and ball joint assembly features a boxed steel control arm measuring up to 288.5 mm in width and 237 mm in length, providing structural strength and durability. The assembly includes rubber bushings that help absorb road shocks and reduce noise, enhancing ride comfort. The ball joint is pre-installed and features a threaded stud with a 14 mm thread diameter, secured with a bolt-in mounting type. A grease fitting is included to allow for periodic lubrication, extending the service life of the ball joint. This assembly is designed for light suspension grade applications, making it suitable for everyday driving conditions on Chevrolet Canyon and GMC Colorado vehicles.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Excessive suspension noise or vibration during driving
• Misalignment issues affecting vehicle handling
• Corroded or weakened control arm compromising suspension integrity

Installation Notes and Tips

Installation of the Dorman 521-591 assembly requires basic suspension repair tools and mechanical knowledge. The control arm is a direct bolt-in replacement with one mounting hole of 12.3 mm diameter. Ensure the ball joint is properly torqued to manufacturer specifications. The included grease fitting allows for lubrication after installation; regular greasing is recommended to maintain optimal performance. It is advisable to have a professional alignment performed after installation to ensure proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-591 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. This product comes with a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for Chevrolet Canyon and GMC Colorado owners.