Dorman 520-809 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward, Front Lower Forward or Front Right Lower Forward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 520-809 suspension control arm and ball joint assembly is designed for reliable performance in Ford Fusion, Lincoln MKZ, Mazda Milan, and Mercury Zephyr vehicles. This pre-greased, iron control arm assembly includes rubber bushings and a threaded ball joint for a secure fit and smooth suspension operation.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings for vibration dampening
• Press-in ball joint with threaded stud for secure mounting
• Iron construction with casting/forged control arm type for durability
• Mounting hardware included for complete installation
• Compatible with Ford Fusion, Lincoln MKZ, Mazda Milan, and Mercury Zephyr

Detailed Product Description

The Dorman 520-809 suspension control arm and ball joint assembly is engineered to meet regular suspension grade requirements with a light suspension grade type. The control arm is constructed from durable iron using casting and forging methods, ensuring strength and longevity. It features a single mounting hole with a diameter of 12.3 mm and a maximum width of 288.5 mm and length of 237 mm, designed to fit specific vehicle models precisely. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce noise and absorb road vibrations, enhancing ride comfort. The ball joint is installed and features a threaded stud with a 14 mm thread diameter, providing a secure and reliable connection to the suspension system.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with the following vehicles:

• Ford Fusion
• Lincoln MKZ
• Mazda Milan
• Mercury Zephyr

It is designed to replace worn or damaged control arms and ball joints, restoring proper suspension geometry and vehicle handling.

Common Suspension Issues Addressed

• Excessive suspension noise or clunking
• Uneven tire wear due to misalignment
• Loose or unstable steering feel
• Vibration or harshness over bumps
• Worn or damaged control arm bushings or ball joints

Installation Notes and Tips

• Pre-greased ball joint allows for immediate installation without additional lubrication
• Use included mounting hardware to ensure proper fit and secure attachment
• Verify mounting hole alignment and torque specifications according to vehicle manufacturer guidelines
• Inspect related suspension components during installation for wear or damage
• Professional installation is recommended for safety and optimal performance

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 520-809 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and reliability. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Refer to Dorman's official documentation for exact warranty terms.