Moog RK80539 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview of Moog RK80539 Suspension Control Arm and Ball Joint Assembly

The Moog RK80539 suspension control arm and ball joint assembly is designed for reliable performance on select Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn vehicles. This pre-greased, stamped steel control arm comes complete with bushings, grease fittings, and mounting hardware to ensure a straightforward installation and long-lasting durability.

• Pre-greased for immediate use and reduced maintenance
• Includes grease fitting for easy lubrication
• Comes with rubber bushings for vibration dampening
• Stamped steel control arm with black finish for corrosion resistance
• Bolt-in ball joint with threaded stud for secure mounting
• Mounting hardware included for complete installation
• Compatible with multiple GM models including Buick Century and Chevrolet Impala

Detailed Product Features and Specifications

The Moog RK80539 control arm assembly features a stamped steel construction that provides strength and durability while maintaining a manageable weight. The control arm is finished in black to resist corrosion and has a maximum length of 18.050 inches, ensuring proper fitment and alignment. The assembly includes rubber bushings that help absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint is designed with a bolt-in mounting type and a threaded stud, allowing for secure attachment and easy replacement if needed. Additionally, the included grease fitting allows for routine lubrication, extending the life of the ball joint and bushings.

Compatible Vehicles and Applications

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

• Buick Century, Regal
• Chevrolet Impala, Impala Limited, Montana, Uplander
• Oldsmobile Silhouette
• Pontiac Grand Prix, Relay, Trans Sport
• Saturn Aura, Ion, Vue (verify specific model years)

Always verify fitment with your vehicle’s year and model before purchase.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Excessive vibration or noise from suspension components
• Misalignment issues affecting vehicle handling
• Corrosion or damage to original control arm assembly

Installation Notes and Tips

Installation of the Moog RK80539 control arm assembly requires basic suspension tools and mechanical knowledge. Since the assembly comes pre-greased and includes bushings and mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before beginning work. Torque all mounting bolts to manufacturer specifications. Regularly check and lubricate the grease fitting to maintain optimal ball joint performance.

Quality Assurance and Warranty

Moog suspension components are engineered to meet or exceed OEM standards. The RK80539 assembly is pre-greased and includes all necessary hardware to ensure proper fit and function. While specific warranty details may vary, Moog typically offers a limited warranty against defects in materials and workmanship. Consult product documentation or Moog’s official resources for exact warranty terms.