Dorman 526-803 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 526-803 suspension control arm and ball joint assembly is designed for select Mercedes-Benz models, including the C230, C250, C300, C350, E350, and E400. This pre-greased, aluminum control arm with an integrated ball joint offers a reliable replacement option for light suspension applications.

• Pre-greased for immediate use without additional lubrication
• Includes rubber and steel bushings for durable suspension performance
• Machined ball joint with threaded stud for secure mounting
• Constructed from lightweight aluminum with a silver finish
• Compatible with Mercedes-Benz C and E-Class models (C230, C250, C300, C350, E350, E400)
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum length 434 mm, maximum width 80 mm

Detailed Product Description

The Dorman 526-803 suspension control arm and ball joint assembly is engineered to meet the suspension needs of various Mercedes-Benz vehicles. Featuring a casting/forged aluminum control arm, this part balances strength and weight reduction. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. The ball joint is machined and includes a threaded stud with a 14 mm thread diameter and a 25.5 mm stud length, ensuring a precise fit and secure connection. Rubber and steel bushings are incorporated to absorb road vibrations and maintain suspension integrity. This assembly is designed for light suspension grade applications and is not adjustable, providing a direct replacement for factory components.

Common Applications and Problem Resolution

• Restores proper suspension geometry and alignment on Mercedes-Benz C230, C250, C300, C350, E350, and E400 models
• Replaces worn or damaged control arms causing uneven tire wear or poor handling
• Addresses ball joint wear that results in clunking noises or steering instability
• Improves ride quality by renewing bushings that have deteriorated over time
• Eliminates suspension looseness and enhances vehicle safety

Installation Notes and Tips

Installation of the Dorman 526-803 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the part comes pre-greased and includes mounting hardware, additional lubrication or hardware sourcing is unnecessary. Ensure the vehicle is properly supported and aligned after installation. Verify torque specifications for the ball joint nut and mounting bolts according to Mercedes-Benz service guidelines. This assembly is not adjustable, so alignment checks are recommended post-installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 526-803 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 covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.