Dorman 524-519 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Dorman 524-519 Front Left Lower Control Arm

Dorman 524-519 is a direct replacement suspension control arm and ball joint assembly for specific front left lower applications. It is built for vehicles that need restored steering response, stable road feel, and consistent suspension geometry.

Compatible With select Mercedes-Benz and INFINITI models, this assembly is pre-greased and includes the ball joint already installed for a straightforward replacement. The aluminum control arm construction, rubber bushings, and press-in ball joint design support OE-style fitment on the listed applications.

Key Features

• Direct replacement for the original front left lower control arm assembly
• Pre-greased for immediate service
• Ball joint installed with a threaded stud and press-in mounting design
• Aluminum control arm with black finish
• Rubber bushings included for suspension isolation
• Mounting hardware included
• Regular grade, light suspension application
• Dorman 524-519 for listed Mercedes-Benz A-Class, B-Class, and CLA-Class applications

Detailed Description

This suspension control arm and ball joint assembly is engineered as a direct OE replacement for specific vehicles, including 2013-2019 Mercedes-Benz CLA250, 2013-2018 Mercedes-Benz A200, and 2017-2019 INFINITI QX30 front left lower applications. It is also listed for additional Mercedes-Benz A-Class and B-Class models with standard suspension. The aluminum casting/forged arm, installed ball joint, and rubber bushings are selected to support smooth ride quality, directional stability, and predictable suspension movement. Dorman 524-519 is a practical replacement when the original arm shows wear at the bushings or ball joint.

This part cross-references MOOG Chassis Products RK622910 and Delphi TC3703 for the same application.

What It Helps Address

• Clunking or knocking from a worn lower control arm
• Loose or imprecise steering feel
• Uneven tire wear caused by suspension wear
• Excessive play from a failing ball joint
• Ride instability on the front left lower suspension corner

Installation Notes and Tips

Install on the front left lower position only for the listed vehicles. Verify suspension type before ordering, since several Mercedes-Benz applications require standard suspension. Because the ball joint is already installed and the assembly is pre-greased, the replacement process is simplified, but final alignment is recommended after installation. Confirm fitment by year, make, model, and suspension configuration before service.

Quality Assurance

Dorman uses an industry-focused evaluation process to validate fit, function, and suspension performance on the specified applications. The part is built to restore OE-style ride characteristics and predictable handling on the vehicles listed above.