Dorman 521-335 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Durable Suspension Control Arm and Ball Joint Assembly for Audi Models

The Dorman 521-335 suspension control arm and ball joint assembly is engineered to restore precise handling and suspension performance for select Audi vehicles. Designed specifically for Audi A4, A4 Quattro, A5, A5 Quattro, Q5, S4, and S5 models, this assembly ensures reliable fitment and function.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Constructed from durable steel with a black finish for corrosion resistance
• Threaded ball joint stud with a 14 mm thread diameter, installed and ready to use
• One mounting hole with a 12.3 mm diameter for secure attachment
• Light suspension grade type suitable for regular driving conditions
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm

Product Details and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-335) is a casting/forged steel component designed to meet the suspension needs of various Audi models including the A4, A4 Quattro, A5, A5 Quattro, Q5, S4, and S5. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to absorb vibrations and reduce noise, enhancing ride comfort. The ball joint is pressed in and installed, featuring a threaded stud for secure connection to the vehicle’s suspension system. The control arm is finished in black to resist corrosion and maintain durability over time.

Common Applications and Problem Resolution

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn control arms or ball joints
• Improves steering response and vehicle stability
• Replaces damaged or corroded control arms to maintain safety
• Addresses uneven tire wear caused by faulty suspension components

Installation Notes and Tips

Installation of the Dorman 521-335 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the part comes pre-greased and includes mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before beginning work. Torque all fasteners to manufacturer specifications and verify alignment after installation. This assembly is not adjustable, so proper fitment is critical for optimal suspension performance.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-335 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.