Dorman 520-127 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-127 suspension control arm and ball joint assembly is engineered for reliable performance in light suspension applications. Designed specifically for select Cadillac, Chevrolet, and GMC models, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Iron control arm with casting/forged construction for strength and durability
• Press-in ball joint with pinch stud type, installed and ready to use
• Compatible with multiple GM trucks and SUVs including Silverado 1500 and Yukon XL 1500

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman features a black iron control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly includes rubber bushings to absorb road vibrations and reduce noise. The ball joint is press-in mounted with a 14 mm thread diameter pinch stud, pre-installed and pre-greased to ensure smooth operation without the need for additional lubrication. Mounting hardware is included, and the control arm has one mounting hole with a diameter of 12.3 mm. This assembly is designed for light suspension grade applications, making it suitable for regular driving conditions.

Compatible Vehicles and Applications

This Dorman 520-127 control arm and ball joint assembly is compatible with a range of GM vehicles, including:

• Cadillac Escalade, Escalade ESV, and Escalade EXT
• Chevrolet Avalanche 1500, Silverado 1500, Silverado 1500 Classic, Suburban 1500, and Tahoe
• GMC Sierra 1500, Sierra 1500 Classic, Yukon, Yukon XL 1500, Express 1500, Express 2500, Savana 1500, and Savana 2500

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling or noise
• Ball joint wear leading to steering looseness or uneven tire wear
• Corroded or cracked control arm compromising suspension integrity
• Vibration or clunking noises from suspension components
• Alignment problems due to faulty suspension parts

Installation Notes and Tips

Installation of the Dorman 520-127 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure the mounting hole aligns properly with the vehicle’s frame and torque all hardware to manufacturer specifications. This assembly is not adjustable, so proper fitment is critical. It is recommended to have a professional alignment performed after installation to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 520-127 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. Refer to Dorman’s warranty policy for specific terms and coverage details.