Moog RK620185 Suspension Control Arm and Ball Joint Assembly - Rear Upper Forward

Moog Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK620185 suspension control arm and ball joint assembly is engineered for precision and durability, designed specifically for select BMW and Rolls-Royce models. This pre-greased, forged aluminum control arm ensures reliable suspension performance and improved handling for vehicles like the BMW 535i and Rolls-Royce Phantom.

• Pre-greased for immediate use and reduced maintenance
• Forged aluminum control arm for strength and lightweight performance
• Includes rubber bushings and mounting hardware for complete installation
• Press-in ball joint with threaded stud for secure fitment
• Compatible with multiple BMW and Rolls-Royce models including 525i, 750Li, and Phantom

Durable Construction and Design Features

The RK620185 control arm assembly features a forged aluminum control arm finished in gray, providing a balance of strength and corrosion resistance. The included rubber bushings help absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint is press-in mounted with a threaded stud type, ensuring a secure and stable connection to the suspension system. This assembly comes pre-greased, eliminating the need for initial lubrication and helping extend the service life of the components.

Compatible Vehicles and Applications

This Moog suspension control arm and ball joint assembly is compatible with a range of BMW models such as the 525i, 528i xDrive, 535i xDrive, 550i, 650i, 745Li, 750i, 760Li, and M5. It also fits the Rolls-Royce Phantom, making it a versatile replacement part for luxury and performance vehicles requiring precise suspension control.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Loose or failing ball joints leading to steering instability
• Corroded or weakened control arm structure affecting suspension integrity
• Excessive vibration or noise from suspension components
• Alignment problems due to faulty suspension parts

Installation Notes and Tips

Installation of the Moog RK620185 control arm assembly requires basic suspension knowledge and tools. Since the part comes pre-greased and includes bushings and mounting hardware, it simplifies the replacement process. Ensure the vehicle is properly supported and aligned after installation to maintain optimal handling and tire wear. Threaded ball joint studs should be torqued to manufacturer specifications for safety and performance.

Quality Assurance and Warranty

Moog parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The RK620185 suspension control arm and ball joint assembly undergoes rigorous testing to ensure fit, form, and function. While specific warranty details may vary, Moog typically offers a limited warranty covering defects in materials and workmanship.