Dorman 521-388 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Durable Suspension Control Arm and Ball Joint Assembly for Chevrolet and GMC

The Dorman 521-388 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet Canyon and GMC Colorado models. Designed with pre-greased components and included bushings, this assembly ensures smooth suspension operation and long-lasting durability.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete installation
• Steel construction with casting/forged control arm for strength and durability
• Bolt-in ball joint with threaded stud for secure mounting
• Compatible with Chevrolet Canyon and GMC Colorado suspension systems

Product Features and Specifications

The Dorman 521-388 control arm and ball joint assembly features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from steel with a black finish, measuring up to 288.5 mm in width and 237 mm in length. It includes one mounting hole with a diameter of 12.3 mm, and the ball joint stud has a 14 mm thread diameter. Rubber bushings are pre-installed to absorb vibrations and provide a smooth ride. The ball joint is installed and ready for bolt-in mounting, eliminating the need for additional grease fittings.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is specifically designed for use with Chevrolet Canyon and GMC Colorado models. It is ideal for replacing worn or damaged suspension components to restore proper alignment and handling characteristics.

• Corrects suspension noise and looseness
• Resolves uneven tire wear caused by faulty control arms
• Improves steering response and vehicle stability
• Eliminates vibration and clunking during driving
• Restores proper suspension geometry after impact or wear

Installation Notes and Tips

Installation of the Dorman 521-388 assembly requires basic suspension knowledge and tools. The pre-greased ball joint and included mounting hardware simplify the process. Ensure the vehicle is securely lifted and supported before removal of the old control arm. Torque all bolts to manufacturer specifications and verify alignment after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-388 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.