Dorman 521-283 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-283 suspension control arm and ball joint assembly is designed for select Mercedes-Benz models, including the C-Class, E-Class, SLC, and SLK series. This assembly combines a durable aluminum control arm with a pre-installed ball joint to ensure reliable suspension performance and handling.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Aluminum control arm with casting/forged construction
• Threaded ball joint stud with press-in mounting type
• Compatible with multiple Mercedes-Benz models such as C180, E350, SLK350, and more

Detailed Product Features and Specifications

The Dorman 521-283 control arm assembly features a lightweight aluminum control arm with a maximum width of 288.5 mm and length of 237 mm, finished in black for corrosion resistance. The assembly includes rubber bushings that help absorb road shocks and reduce noise. The ball joint is pre-installed and pre-greased, eliminating the need for immediate maintenance after installation. It uses a press-in mounting type with a threaded stud of 14 mm diameter, ensuring secure attachment to the suspension system. This assembly is designed for light suspension grade applications and includes one mounting hole with a diameter of 12.3 mm. The control arm is not adjustable but comes with mounting hardware to facilitate installation.

Compatible Mercedes-Benz Models

This suspension control arm and ball joint assembly is compatible with a range of Mercedes-Benz vehicles, including:

• C-Class: C180, C200, C230, C250, C280, C300, C350
• E-Class: E250, E350, E400, E500, E550
• SLC-Class: SLC180, SLC200, SLC300
• SLK-Class: SLK55 AMG, SLK200, SLK250, SLK300, SLK350

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Ball joint wear leading to suspension noise or looseness
• Corroded or bent control arms affecting wheel alignment
• Vibration and uneven tire wear due to faulty suspension components
• Reduced steering response from compromised suspension parts

Installation Notes and Tips

When installing the Dorman 521-283 control arm and ball joint assembly, ensure the vehicle is securely lifted and supported. Since the ball joint is pre-installed and pre-greased, no additional lubrication is required before installation. Verify that the mounting hole aligns correctly with the vehicle’s suspension points. Torque all fasteners to manufacturer specifications to maintain suspension integrity and safety.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-283 assembly undergoes rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their suspension parts to cover defects in materials and workmanship.