Dorman 520-621 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-621 suspension control arm and ball joint assembly is engineered for reliable performance in Acura and Honda vehicles. Designed specifically for models like the Accord, CL, and TL, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Steel construction with casting/forged control arm for strength and durability
• Press-in ball joint with threaded stud for secure mounting
• Compatible with light suspension grade applications

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 520-621) features a black steel 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 reduce vibration and noise, and mounting hardware is included for a straightforward replacement process. The assembly is designed for light suspension grade use and is not adjustable.

Compatible Vehicles and Applications

This Dorman control arm and ball joint assembly is compatible with select Acura and Honda models, including the Accord, CL, and TL. It is intended for use in suspension systems requiring a regular grade, light suspension control arm replacement. The assembly is suitable for vehicles needing a direct-fit replacement part to maintain factory suspension geometry and handling characteristics.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing excessive play or noise
• Faulty ball joints leading to steering instability or uneven tire wear
• Corroded or bent control arms affecting suspension alignment
• Loose or missing mounting hardware compromising suspension integrity
• Reduced suspension performance due to lack of lubrication or wear

Installation Notes and Tips

The Dorman 520-621 assembly comes pre-greased and includes all necessary bushings and mounting hardware, simplifying installation. Ensure the vehicle is securely lifted and supported before removal of the old control arm. Use appropriate tools to press out the old ball joint if necessary. Verify torque specifications for mounting bolts and check alignment after installation to maintain proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 520-621 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in the product's reliability.