Moog RK80721 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Reliable Suspension Control Arm and Ball Joint Assembly

The Moog RK80721 suspension control arm and ball joint assembly is engineered for Ford Explorer, Explorer Sport Trac, and Mercury Mountaineer models. Designed with durability and performance in mind, this pre-greased assembly ensures smooth steering and suspension operation.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for effective vibration dampening
• Stamped steel control arm construction for strength and longevity
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Control arm finished in black for corrosion resistance
• Compatible with Ford Explorer, Explorer Sport Trac, and Mercury Mountaineer

Durable Design and Construction Details

The Moog RK80721 control arm assembly features a stamped steel control arm that provides a robust foundation for suspension components. The included rubber bushings help absorb road shocks and reduce noise, contributing to a smoother ride. The ball joint is press-in mounted with a threaded stud, ensuring a secure fit and reliable steering response. This assembly comes pre-greased, eliminating the need for initial lubrication and helping to extend the service life of the joint. The black finish on the control arm offers additional protection against rust and corrosion.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is specifically designed for use with the following vehicles:

• Ford Explorer
• Ford Explorer Sport Trac
• Mercury Mountaineer

Part number RK80721 is tailored to meet the suspension requirements of these models, ensuring proper fit and function.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Excessive suspension noise or vibration
• Corroded or weakened control arm components
• Difficulty maintaining proper wheel alignment

Installation Notes and Tips

Installation of the Moog RK80721 assembly requires basic suspension tools and mechanical knowledge. Since the assembly is pre-greased and includes mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before beginning work. Verify compatibility with your specific Ford Explorer, Explorer Sport Trac, or Mercury Mountaineer model year. After installation, a professional wheel alignment is recommended to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM specifications. The RK80721 control arm and ball joint 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.