Dorman 521-284 Suspension Control Arm and Ball Joint Assembly - Front Right Lower Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-284 suspension control arm and ball joint assembly is designed for select Mercedes-Benz models, including the C-Class, E-Class, SLK, and SLC series. This assembly combines a durable aluminum control arm with a pre-installed ball joint to ensure reliable suspension performance and vehicle handling.

• Pre-greased ball joint for immediate use
• Aluminum control arm with black finish for corrosion resistance
• Includes rubber bushings for vibration dampening
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Compatible with multiple Mercedes-Benz models such as C180, E350, SLK350, and more

Detailed Product Features and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-284) features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from forged and cast aluminum, providing a balance of strength and weight savings. It measures up to 288.5 mm in width and 237 mm in length, finished in black to resist corrosion. The assembly includes rubber bushings that help absorb road vibrations and reduce noise. The ball joint is press-in mounted with a threaded stud of 14 mm diameter, pre-greased for maintenance-free operation. One mounting hole with a diameter of 12.3 mm is included, and the package contains all necessary mounting hardware for installation.

Compatible Mercedes-Benz Models

This 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
• SLK Series: SLK200, SLK250, SLK300, SLK350, SLK55 AMG
• SLC Series: SLC180, SLC200, SLC300

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Ball joint wear leading to steering looseness or noise
• Corroded or weakened control arm compromising suspension integrity
• Uneven tire wear due to suspension misalignment
• Vibration and noise from deteriorated suspension components

Installation Notes and Tips

Before installation, verify vehicle compatibility with the Dorman 521-284 part number. The assembly comes pre-greased and includes mounting hardware, simplifying the replacement process. Use proper tools to press out the old ball joint if necessary, and torque mounting bolts to manufacturer specifications. Since the control arm is non-adjustable, alignment should be checked and corrected after installation to ensure optimal vehicle handling.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-284 control arm and ball joint 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.