Dorman 521-506 Suspension Control Arm - Rear Right Lower Rearward

Durable Aluminum Suspension Control Arm for Mercedes-Benz

The Dorman 521-506 suspension control arm is engineered for reliable performance on select Mercedes-Benz models including CLS55 AMG, E55 AMG, and SL600. Crafted from aluminum with a coated black finish, this control arm offers strength and corrosion resistance for long-lasting suspension support.

• Constructed from lightweight, durable aluminum with casting and forging techniques
• Includes a black rubber bushing with a 14.3 mm inside diameter for smooth articulation
• Overall length of 262.5 mm designed to match factory specifications
• Ball joint mounting type is welded with a threaded stud (ball joint not included)
• Coated black finish enhances corrosion resistance and durability
• Press-in end type with bushing linkage for secure fitment
• Compatible with multiple Mercedes-Benz models such as CLS350, E500, and SL550

Technical Details and Construction

This suspension control arm features a robust aluminum construction combining casting and forging methods to ensure structural integrity under dynamic driving conditions. The included rubber bushing, finished in black, measures 39.6 mm outside diameter and 92 mm in length, providing effective vibration dampening and noise reduction. The control arm’s 262.5 mm overall length aligns precisely with OEM specifications for a direct replacement. The welded ball joint mounting type with a threaded stud allows for secure attachment of the ball joint, although the ball joint itself is not included with this part.

Compatible Mercedes-Benz Models

This Dorman suspension control arm (part number 521-506) is compatible with a range of Mercedes-Benz vehicles, including CLS55 AMG, CLS63 AMG, CLS350, CLS500, CLS550, E55 AMG, E63 AMG, E320, E350, E500, E550, SL55 AMG, SL500, SL550, and SL600. Ensure compatibility by verifying your vehicle’s model and year before installation.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Corroded or weakened control arm structure affecting suspension alignment
• Excessive vibration or noise from faulty suspension components
• Loose or damaged ball joint mounting points
• Uneven tire wear due to suspension misalignment

Installation Notes and Tips

Installation of the Dorman 521-506 control arm requires basic suspension knowledge and appropriate tools. Since the ball joint is not included, inspect the existing ball joint for wear and replace if necessary. The control arm features a press-in end and bushing linkage, so proper pressing tools are recommended for bushing installation or removal. Always torque mounting hardware to manufacturer specifications and perform a wheel alignment after installation to ensure optimal handling and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-506 control arm undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.