Moog RK641421 Suspension Control Arm - Rear Left Upper Rearward

Overview of Moog RK641421 Suspension Control Arm

The Moog RK641421 suspension control arm is engineered for precise fitment on select Mercedes-Benz models, including the C63 AMG, C300, and CLS550. Crafted from forged aluminum, this control arm offers a durable and reliable solution for maintaining proper suspension geometry and vehicle handling.

• Constructed from forged aluminum for strength and lightweight performance
• Length of 13.5 inches designed for exact fitment
• Includes rubber bushings to reduce vibration and noise
• Finished in black for corrosion resistance
• Compatible with multiple Mercedes-Benz models such as C230, E350, and GLC300

Detailed Product Description

The Moog RK641421 suspension control arm is a non-adjustable, regular grade component designed to replace worn or damaged control arms on various Mercedes-Benz vehicles. Its forged aluminum construction provides a balance of durability and weight savings, contributing to improved suspension response. The included rubber bushings help absorb road shocks and minimize noise, enhancing ride comfort. This control arm does not come pre-greased and does not include a grease fitting or ball joint, focusing on essential suspension support. The black finish offers additional protection against corrosion, extending the service life of the part.

Compatible Mercedes-Benz Models and Applications

• Mercedes-Benz C63 AMG, C230, C250, C300, C350, C350e, C400
• Mercedes-Benz CLS400, CLS450, CLS550
• Mercedes-Benz E53 AMG, E250, E300, E350, E400, E450, E550
• Mercedes-Benz GLC300, GLC350e

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing excessive play
• Unstable or imprecise steering response
• Uneven tire wear due to misaligned suspension geometry
• Clunking noises from suspension under load
• Reduced ride comfort from degraded suspension components

Installation Notes and Tips

Installation of the Moog RK641421 control arm requires basic suspension knowledge and appropriate tools. Since mounting hardware is not included, retain original bolts or source compatible fasteners. Inspect related suspension components during replacement to ensure overall system integrity. Proper torque specifications should be followed to maintain safety and performance. Alignment is recommended after installation to restore correct suspension geometry.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. While specific warranty details for part number RK641421 are not provided here, Moog typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or Moog directly for exact warranty terms.