Dorman 521-505 Suspension Control Arm - Rear Left Lower Rearward

Dorman Rear Left Lower Rearward Control Arm

Dorman 521-505 is a suspension control arm for select Mercedes-Benz models with rear left lower rearward placement. It is precision-engineered and tested as a direct replacement for the original equipment control arm on the listed applications, including Mercedes-Benz E-Class, CLS-Class, and SL-Class vehicles.

Built with an aluminum body and coated black finish, this control arm uses casting/forged construction for a durable OE-style fit. It includes a rubber bushing with black bushing color, while the ball joint is not included and the arm is not adjustable.

• Fits 2003-2012 Mercedes-Benz SL500, rear left lower rearward
• Fits 2007-2012 Mercedes-Benz SL550, rear left lower rearward
• Fits 2004-2012 Mercedes-Benz SL600, rear left lower rearward
• Fits 2006-2011 Mercedes-Benz CLS500, rear left lower rearward
• Fits 2007-2011 Mercedes-Benz CLS550, rear left lower rearward
• Fits 2007-2011 Mercedes-Benz CLS63 AMG, rear left lower rearward
• Fits 2007-2009 Mercedes-Benz CLS350, rear left lower rearward
• Fits 2003-2009 Mercedes-Benz E320, rear left lower rearward
• Fits 2006-2009 Mercedes-Benz E350, rear left lower rearward
• Fits 2003-2009 Mercedes-Benz E500, rear left lower rearward
• Fits 2007-2009 Mercedes-Benz E550, rear left lower rearward
• Fits 2007-2009 Mercedes-Benz E63 AMG, rear left lower rearward
• Fits 2003-2008 Mercedes-Benz SL55 AMG, rear left lower rearward
• Fits 2006 Mercedes-Benz CLS55 AMG, rear left lower rearward
• Fits 2003-2006 Mercedes-Benz E55 AMG, rear left lower rearward

This part cross-references Beck/Arnley 102-6441 and Delphi TC2293 for the same application.

Key Features

• Aluminum construction with casting/forged design
• Coated black finish for corrosion resistance
• Rubber bushing included with press-in end design
• Threaded ball joint stud type; ball joint not included
• Direct replacement for rear left lower rearward suspension locations
• Non-adjustable OE-style control arm for select Mercedes-Benz chassis

What This Control Arm Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from worn control arm bushings
• Uneven rear tire wear caused by suspension wear
• Excessive rear wheel movement under braking or cornering
• Restoring proper rear suspension geometry on Mercedes-Benz E320, E350, E500, E550, CLS, and SL models

Installation Notes and Tips

Verify the rear left lower rearward position before installation and compare the original arm length and bushing layout to the replacement part. Because mounting hardware is not included and the ball joint is not included, transfer or source the required related components as needed for the repair. A professional alignment is recommended after suspension work on Mercedes-Benz E-Class, CLS-Class, and SL-Class applications.

Quality Assurance

Dorman suspension components are engineered and tested to replace the original equipment part on specific vehicles. Part number 521-505 is built to meet the fitment and construction requirements of the listed Mercedes-Benz applications.