Dorman 521-023 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-023 suspension control arm and ball joint assembly is engineered for reliable performance in light suspension applications. Designed specifically for select Cadillac, Chevrolet, and GMC trucks and SUVs, this assembly ensures proper steering and suspension function.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Iron control arm with a black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with multiple models including Chevrolet Silverado 1500 and GMC Sierra 1500

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is constructed from forged and cast iron, providing strength and durability for regular driving conditions. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to absorb road vibrations and reduce noise. The ball joint is installed and features a press-in mounting type with a 14 mm threaded stud, ensuring a secure fit. Mounting hardware is included, and the control arm measures up to 288.5 mm in width and 237 mm in length, with a single 12.3 mm mounting hole.

Compatible Vehicles

This part number 521-023 is compatible with a range of Cadillac, Chevrolet, and GMC models, including:

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

Common Applications and Problem Resolution

This control arm and ball joint assembly is used to maintain proper suspension geometry and steering control. It addresses issues such as:

• Excessive suspension noise or clunking
• Uneven tire wear due to misalignment
• Loose or unstable steering feel
• Worn or damaged bushings causing vibration
• Ball joint wear leading to suspension play

Installation Notes and Tips

Installation requires basic suspension tools and mechanical knowledge. Since the ball joint is pre-installed and the assembly is pre-greased, no additional lubrication is necessary. 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 is essential before installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-023 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. Please refer to Dorman’s warranty policy for specific coverage details.