Dorman 521-755 Suspension Control Arm and Ball Joint Assembly - Front Lower Forward

Durable Suspension Control Arm and Ball Joint Assembly for Audi A8 Quattro and S8

The Dorman 521-755 suspension control arm and ball joint assembly is engineered to restore precise handling and suspension performance for Audi A8 Quattro and S8 models. Designed with quality steel construction and pre-greased components, this assembly ensures reliable operation and long service life.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Threaded ball joint stud with a 14 mm thread diameter for secure fitment
• Constructed from durable steel with a black finish for corrosion resistance
• Compatible with Audi A8 Quattro and S8 suspension systems

Product Features and Specifications

This suspension control arm and ball joint assembly features a pressed attachment type and a casting/forged control arm design, providing strength and durability under regular driving conditions. The assembly includes 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. Rubber bushings are included to absorb vibrations and reduce noise, enhancing ride comfort. The ball joint is installed and ready for use, eliminating the need for additional assembly.

Compatible Vehicles and Applications

This Dorman 521-755 control arm assembly is specifically compatible with Audi A8 Quattro and Audi S8 models, ensuring proper fit and function. It is designed for light suspension grade applications, making it suitable for standard driving conditions and maintaining factory suspension geometry.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Corroded or bent control arms affecting vehicle alignment
• Excessive suspension noise or vibration during driving
• Reduced handling performance and compromised ride quality

Installation Notes and Tips

Installation of the Dorman 521-755 assembly requires basic suspension knowledge and appropriate tools. Since the ball joint is pre-installed and pre-greased, it simplifies the replacement process. Ensure all mounting hardware is securely tightened to manufacturer torque specifications. It is recommended to perform a wheel alignment after installation to maintain proper suspension geometry and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 521-755 control arm and ball joint assembly undergoes rigorous quality checks to ensure fitment and function. Please refer to Dorman's warranty policy for specific coverage details.