Dorman 521-976 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-976 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet and GMC heavy-duty trucks and vans. Designed specifically for models like the Silverado 2500, Sierra 2500, Express 2500, and Yukon XL 2500, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate use and extended service life
• Includes grease fitting for easy maintenance
• Light suspension grade type suitable for heavy-duty applications
• Steel control arm with rubber bushings for durability and vibration reduction
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm
• Black finish for corrosion resistance

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is constructed from forged and cast steel, providing strength and rigidity required for heavy-duty Chevrolet and GMC vehicles. The assembly comes pre-greased and includes a grease fitting, allowing for routine lubrication to maintain smooth operation. Rubber bushings are integrated to absorb road vibrations and reduce noise, enhancing ride comfort. The ball joint is press-in mounted with a threaded stud (14 mm thread diameter), ensuring a secure fit and compatibility with factory mounting points. The package includes all necessary mounting hardware and features a single mounting hole with a diameter of 12.3 mm.

Compatible Vehicles and Applications

This Dorman 521-976 suspension control arm and ball joint assembly is compatible with the following Chevrolet and GMC models:

• Chevrolet Express 2500 and 3500
• Chevrolet Silverado 2500
• Chevrolet Suburban 2500
• GMC Savana 2500 and 3500
• GMC Sierra 2500
• GMC Yukon XL 2500

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Loose or corroded mounting hardware affecting suspension alignment
• Reduced suspension performance due to lack of lubrication
• Vibration and noise from deteriorated rubber bushings

Installation Notes and Tips

Installation of the Dorman 521-976 assembly requires basic suspension tools and mechanical knowledge. The assembly comes pre-greased and includes a grease fitting for future maintenance. Ensure all mounting hardware is torqued to manufacturer specifications. Since the ball joint is press-in mounted with a threaded stud, verify proper alignment before tightening. It is recommended to inspect related suspension components during installation and perform a wheel alignment afterward to maintain optimal handling.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-976 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in its long-term reliability for Chevrolet and GMC heavy-duty vehicles.