Dorman 520-166 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-166 suspension control arm and ball joint assembly is engineered for reliable performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed to meet regular suspension grade requirements, this assembly ensures proper handling and stability for models like the Buick LaCrosse and Chevrolet Impala.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Steel construction with casting/forged control arm for strength and durability
• Bolt-in ball joint with threaded stud for secure fitment
• Compatible with Buick Allure, Chevrolet Monte Carlo, Oldsmobile Intrigue, Pontiac Grand Prix, and more

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 520-166) features a black steel control arm with a maximum width of 288.5 mm and length of 237 mm. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to absorb vibrations and reduce noise, while the ball joint is installed and ready to bolt in with a single mounting hole measuring 12.3 mm in diameter. The ball joint stud is threaded with a 14 mm diameter, ensuring a secure connection to the vehicle’s suspension system.

Compatible Vehicles and Applications

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

• Buick Allure and LaCrosse
• Chevrolet Impala, Impala Limited, and Monte Carlo
• Oldsmobile Intrigue
• Pontiac Grand Prix and Regal
• Buick Century

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Loose or failing ball joints leading to steering instability
• Excessive suspension noise or vibration
• Uneven tire wear due to suspension misalignment
• Corroded or weakened control arm compromising safety

Installation Notes and Tips

Installation of the Dorman 520-166 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and the control arm is pre-greased, the process is streamlined. Ensure the mounting hole aligns properly with the vehicle’s frame and torque all bolts to manufacturer specifications. No grease fitting is included, so no additional lubrication is necessary after installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. This suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.