Moog RK621801 Suspension Control Arm and Ball Joint Assembly - Rear Upper Rearward

Moog Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK621801 suspension control arm and ball joint assembly is engineered for reliable performance in Ford Expedition and Lincoln Navigator vehicles. Designed with durability and precision, this assembly ensures proper suspension function and vehicle handling.

• Pre-greased for immediate use
• Includes rubber bushings and mounting hardware
• Forged steel control arm construction in black finish
• Press-in ball joint with threaded stud type
• Compatible with Ford Expedition and Lincoln Navigator models

Durable Construction and Design Features

This Moog suspension control arm and ball joint assembly (part number RK621801) features a forged steel control arm that provides strength and resistance to wear. The black finish offers corrosion resistance, extending the life of the component. The assembly comes pre-greased, eliminating the need for initial lubrication, and includes rubber bushings to absorb road vibrations and reduce noise. The ball joint is press-in mounted with a threaded stud, ensuring secure attachment and ease of installation. Mounting hardware is included to facilitate a complete replacement.

Compatible Vehicles and Application

This control arm and ball joint assembly is specifically designed for use with Ford Expedition and Lincoln Navigator models. It is engineered to meet the suspension requirements of these vehicles, maintaining proper alignment and handling characteristics. The part number RK621801 ensures compatibility and fitment accuracy for these applications.

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 weakened control arm compromising suspension integrity
• Excessive vibration or noise from suspension components
• Misalignment affecting vehicle handling and safety

Installation Notes and Tips

Installation of the Moog RK621801 assembly requires basic suspension knowledge and tools. Since the control arm comes pre-greased and includes bushings and mounting hardware, it simplifies the replacement process. Ensure the vehicle is properly supported and aligned after installation. Torque specifications should be followed according to manufacturer guidelines. This assembly is not adjustable, so precise fitment is critical.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards. The RK621801 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, providing confidence in the product's reliability.