Moog RK621158 Suspension Control Arm and Ball Joint Assembly - Front Right Lower Rearward

Reliable Suspension Control Arm for Mercedes-Benz Models

The Moog RK621158 Suspension Control Arm and Ball Joint Assembly is engineered to restore precise steering and suspension performance for select Mercedes-Benz vehicles. Designed with durability and fitment in mind, this control arm assembly is a direct replacement for models including the C230, C250, C300, C350, E350, and E400.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Forged steel control arm construction for strength
• Press-in ball joint mounting with threaded stud
• Black finish for corrosion resistance
• Mounting hardware included for installation
• Maximum control arm length of 12.770 inches

Durable Construction and Design Features

The RK621158 control arm assembly features a forged steel control arm that provides enhanced structural integrity and long-lasting performance. The included rubber bushings help absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint is pre-greased and press-fitted into the arm, with a threaded stud type that ensures secure attachment to the suspension system. Finished in black, the control arm resists corrosion and maintains its appearance over time.

Compatible Mercedes-Benz Models

This suspension control arm assembly is compatible with a range of Mercedes-Benz vehicles, specifically the C230, C250, C300, C350, E350, and E400 models. Using the Moog RK621158 ensures proper fitment and reliable suspension performance for these vehicles.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Excessive suspension noise or vibration
• Misalignment affecting vehicle handling
• Corrosion or structural fatigue of original control arm

Installation Notes and Tips

Before installation, verify compatibility with your specific Mercedes-Benz model and year. The control arm comes pre-greased, eliminating the need for additional lubrication during assembly. Use appropriate tools to press-fit the ball joint securely and torque mounting hardware to manufacturer specifications. Inspect related suspension components during installation to ensure overall system integrity.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The RK621158 control arm assembly is backed by Moog's quality assurance processes. Please refer to Moog's official warranty policy for detailed coverage information.