Moog RK620490 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview of Moog RK620490 Suspension Control Arm Assembly

The Moog RK620490 suspension control arm and ball joint assembly is designed specifically for Ford Explorer and Mercury Mountaineer models. This pre-greased, stamped steel control arm ensures reliable suspension performance and durability for your vehicle.

• Pre-greased for immediate use
• Includes rubber bushings and mounting hardware
• Stamped steel control arm construction in black finish
• Press-in ball joint with threaded stud type
• Compatible with Ford Explorer and Mercury Mountaineer

Detailed Product Features and Specifications

The Moog RK620490 control arm assembly features a stamped steel control arm with a maximum length of 22.65 inches, finished in black for corrosion resistance. It comes pre-greased, eliminating the need for initial lubrication, although it does not include a grease fitting. The assembly includes rubber bushings to absorb road vibrations and reduce noise, enhancing ride comfort. The ball joint is press-in mounted with a threaded stud type, providing secure attachment and ease of installation. Mounting hardware is included to facilitate a complete replacement.

Compatible Vehicles and Application

This suspension control arm and ball joint assembly is compatible with the Ford Explorer and Mercury Mountaineer models. It is designed to restore proper suspension geometry and improve handling characteristics for these vehicles. The part number RK620490 ensures you receive the correct fitment for your specific model year and suspension setup.

Common Suspension Issues Addressed

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

Installation Notes and Tips

Installation of the Moog RK620490 control arm assembly requires basic suspension tools and mechanical knowledge. Since the ball joint is press-in mounted, professional press equipment may be necessary if replacing components individually. The assembly comes pre-greased and includes mounting hardware, simplifying the installation process. Always verify vehicle compatibility before installation and follow manufacturer torque specifications for mounting bolts.

Quality Assurance and Warranty

Moog suspension components are engineered to meet or exceed OEM standards. The RK620490 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 warranty documentation for complete terms.