Moog RK90423 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Moog RK90423 Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK90423 suspension control arm and ball joint assembly is engineered for reliable performance and durability. Designed specifically for select Chrysler and Mercedes-Benz models, this pre-greased control arm assembly ensures a precise fit and smooth suspension operation.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings for effective vibration dampening
• Stamped steel control arm construction in black finish for strength and corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for a complete replacement solution
• Compatible with Chrysler Crossfire and multiple Mercedes-Benz AMG and standard models

Detailed Product Description

The Moog RK90423 combines a stamped steel control arm with a press-in ball joint featuring a threaded stud, providing a robust and reliable suspension component. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to absorb road vibrations and reduce noise, contributing to a smoother ride. The control arm measures up to 7.870 inches in length and is finished in black to resist corrosion and wear. This assembly is designed for direct replacement on Chrysler Crossfire and Mercedes-Benz models such as the C36 AMG, C43 AMG, C220, C230, C280, CLK55 AMG, CLK320, CLK430, E55 AMG, E320, E420, E430, SLK32 AMG, SLK230, and SLK320.

Common Applications and Problem Resolution

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn control arms or ball joints
• Improves steering response and vehicle handling
• Reduces uneven tire wear caused by faulty suspension components
• Addresses vibration and harshness issues related to deteriorated bushings

Installation Notes and Tips

Installation of the Moog RK90423 requires basic suspension knowledge and tools. Since the assembly is pre-greased and includes mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before removing the old control arm. Verify compatibility with your specific Chrysler or Mercedes-Benz model prior to installation. Torque all fasteners to manufacturer specifications to maintain safety and performance.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards. The RK90423 control arm and ball joint assembly undergoes rigorous testing to ensure durability and fitment accuracy. 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.