Moog RK621943 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview of Moog RK621943 Suspension Control Arm Assembly

The Moog RK621943 suspension control arm and ball joint assembly is designed for reliable performance on select Buick, Chevrolet, Pontiac, and Saturn vehicles. This pre-greased, stamped steel control arm is engineered to meet the demands of models like the Montana, Relay, Terraza, and Uplander.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Stamped steel construction ensures durability and strength
• Bolt-in ball joint with threaded stud for secure fitment
• Compatible with Buick Montana, Chevrolet Uplander, Pontiac Montana, Saturn Relay, and Terraza

Detailed Product Features and Specifications

The Moog RK621943 control arm assembly features a stamped steel control arm finished in black for corrosion resistance and durability. It comes pre-greased, eliminating the need for initial lubrication during installation. The assembly includes rubber bushings that help absorb road vibrations and provide a smoother ride. The ball joint is bolt-in mounted with a threaded stud type, ensuring a secure and precise fit. Mounting hardware is included to facilitate a straightforward installation process. The control arm has a maximum length of 13.930 inches, designed to match factory specifications for proper suspension geometry.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with several GM models, including Buick Montana, Chevrolet Uplander, Pontiac Montana, Saturn Relay, and Terraza. It is specifically designed to replace worn or damaged control arms on these vehicles, restoring proper suspension function and handling characteristics.

Common Issues Addressed by Moog RK621943

• Worn or damaged control arm bushings causing excessive play or noise
• Faulty ball joints leading to steering instability or uneven tire wear
• Corroded or bent control arms affecting suspension alignment
• Vibrations or clunking noises during driving over bumps
• Difficulty maintaining proper wheel alignment and handling

Installation Notes and Tips

Installation of the Moog RK621943 control arm assembly requires basic suspension tools and mechanical knowledge. Since the part comes pre-greased and includes bushings and mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before removing the old control arm. Torque all mounting bolts to manufacturer specifications. After installation, a professional wheel alignment is recommended to maintain proper suspension geometry and tire wear.

Quality Assurance and Warranty

Moog parts are engineered to meet or exceed OEM standards for fit, form, and function. The RK621943 control arm assembly undergoes rigorous testing to ensure durability and performance. While specific warranty details may vary, Moog typically offers a limited warranty covering defects in materials and workmanship. Refer to Moog’s official documentation for complete warranty information.