Dorman 521-298 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly for Mercedes-Benz

The Dorman 521-298 suspension control arm and ball joint assembly is engineered for reliable performance in Mercedes-Benz E320, E350, E500, and E550 models. Designed with quality materials and pre-greased components, this assembly ensures smooth suspension operation and improved vehicle handling.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings for vibration dampening
• Aluminum control arm with casting/forged construction for strength and lightweight durability
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for a complete replacement solution

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-298) is designed specifically for light suspension grade applications. The control arm is constructed from aluminum, combining strength with reduced weight to maintain vehicle efficiency. It features a single mounting hole with a diameter of 12.3 mm and measures up to 288.5 mm in width and 237 mm in length. The assembly includes rubber bushings to absorb road vibrations and a press-in ball joint with a 14 mm threaded stud, pre-installed and ready for use. The control arm is finished in black for corrosion resistance and durability.

Compatible Mercedes-Benz Models

This Dorman suspension control arm and ball joint assembly is compatible with the following Mercedes-Benz vehicles: E320, E350, E500, and E550. It is designed to meet the specific suspension requirements of these models, ensuring proper fit and function.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing excessive play
• Faulty ball joints leading to steering instability
• Corroded or weakened control arm compromising suspension integrity
• Uneven tire wear due to suspension misalignment
• Noise or vibration from suspension components

Installation Notes and Tips

Installation of the Dorman 521-298 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and the control arm is pre-greased, the assembly is ready for immediate installation. Ensure all mounting hardware is securely tightened to manufacturer torque specifications. Alignment check after installation is recommended to maintain proper handling and tire wear.

Quality Assurance and Warranty

Dorman provides this suspension control arm and ball joint assembly with a focus on durability and fitment accuracy. The product includes mounting hardware and is manufactured to meet or exceed OEM standards. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.