Dorman 520-128 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-128 suspension control arm and ball joint assembly is engineered for reliable performance in select GM trucks and SUVs. Designed to meet regular grade suspension requirements, this assembly offers a pre-greased ball joint and includes all necessary mounting hardware for a straightforward replacement.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Iron control arm with casting/forged construction
• Ball joint installed with press-in mounting and pinch stud type
• Mounting hardware included for easy installation
• Compatible with multiple Cadillac, Chevrolet, and GMC models

Product Features and Specifications

This suspension control arm and ball joint assembly features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from durable iron with a black finish, measuring a maximum length of 237 mm and width of 288.5 mm. The assembly includes rubber bushings to reduce noise and absorb road shocks. The ball joint is press-in mounted with a pinch stud type and a 14 mm thread diameter, pre-installed and pre-greased to reduce maintenance needs. One mounting hole with a diameter of 12.3 mm is included, along with all necessary mounting hardware for a complete installation.

Compatible Vehicles

This Dorman 520-128 control arm and ball joint assembly is compatible with a range of GM vehicles, including Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche 1500, Silverado 1500 and Silverado 1500 Classic, Suburban 1500, Tahoe, GMC Sierra 1500 and Sierra 1500 Classic, Yukon, Yukon XL 1500, Express 1500, Express 2500, Savana 1500, and Savana 2500 models.

Common Applications and Problem Resolution

• Replaces worn or damaged suspension control arms
• Addresses excessive play or noise in ball joints
• Improves vehicle handling and steering stability
• Eliminates vibration caused by deteriorated bushings
• Restores proper suspension geometry for safe driving

Installation Notes and Tips

Installation of the Dorman 520-128 assembly requires basic suspension tools and mechanical knowledge. The ball joint comes pre-installed and pre-greased, eliminating the need for additional lubrication during installation. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. This assembly is not adjustable, so verify fitment before installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 520-128 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 under normal use conditions.