Moog RK621604 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Moog Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK621604 suspension control arm and ball joint assembly is designed for reliable performance on select Ford and Mercury vehicles. Engineered with forged steel and pre-greased components, this assembly provides durable suspension support for the Ford Five Hundred, Freestyle, and Mercury Montego models.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Forged steel control arm for strength and durability
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Control arm finished in black for corrosion resistance

Detailed Product Description

The Moog RK621604 suspension control arm and ball joint assembly is constructed from forged steel, providing a robust and long-lasting component for your vehicle's suspension system. The assembly comes pre-greased, eliminating the need for initial lubrication and ensuring smooth operation from the start. Rubber bushings are included to reduce noise and absorb road vibrations, enhancing ride comfort. The ball joint features a press-in mounting type with a threaded stud, allowing for a secure and precise fit. This assembly is compatible with Ford Five Hundred, Ford Freestyle, and Mercury Montego models, making it a suitable replacement part for these vehicles.

Common Applications and Issues Addressed

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn control arms
• Improves steering response and handling stability
• Replaces damaged or worn ball joints to prevent suspension failure
• Reduces vibration and harshness caused by deteriorated bushings

Installation Notes and Tips

Installation of the Moog RK621604 control arm assembly requires basic suspension knowledge and tools. Since the ball joint is press-in type with a threaded stud, ensure proper torque specifications are followed during installation. The included mounting hardware simplifies the replacement process. Although the assembly is pre-greased, inspect all components during installation for any signs of damage. Alignment check after installation is recommended to maintain optimal vehicle handling.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards. The RK621604 assembly undergoes rigorous testing to ensure durability and performance. This part includes a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for Ford Five Hundred, Freestyle, and Mercury Montego vehicles.