Dorman 521-254 Suspension Control Arm and Ball Joint Assembly - Front Right Upper Rearward

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-254 suspension control arm and ball joint assembly is engineered for reliable performance in Audi and Porsche vehicles. Designed to meet regular suspension grade requirements, this assembly ensures proper handling and stability for models including the Audi A4, A5, A6, A7, and Porsche Macan, Q5, RS5, and RS7.

• 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
• Constructed from durable steel with a black finish for corrosion resistance
• Pressed attachment type with one mounting hole (12.3 mm diameter)
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm
• Ball joint installed and included for convenience
• Compatible with light suspension grade applications

Product Details and Specifications

The Dorman 521-254 control arm and ball joint assembly is a casting/forged steel component designed for light suspension grade use. It features a pre-greased ball joint stud that is threaded for secure attachment, eliminating the need for additional grease fittings. Rubber bushings are included to absorb vibrations and reduce noise, enhancing ride comfort. The assembly comes with all necessary mounting hardware, simplifying the installation process. Its black finish provides added protection against rust and wear, extending the service life of the part.

Compatible Audi and Porsche Models

This suspension control arm and ball joint assembly is compatible with a range of Audi and Porsche vehicles, including Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, A7, A7 Quattro, allroad, RS5, RS7, S4, S5, S6, S7, and Porsche Macan, Q5, SQ5 models. The part number 521-254 ensures precise fitment for these models, maintaining factory suspension geometry and performance.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Corroded or bent control arms affecting vehicle alignment
• Loose or missing mounting hardware resulting in suspension play
• Reduced ride comfort due to degraded suspension components

Installation Notes and Tips

Before installation, verify compatibility with your specific Audi or Porsche model using the part number 521-254. The assembly comes pre-greased and includes all necessary bushings and mounting hardware, but no grease fitting is included. Use proper torque specifications for the single mounting hole (12.3 mm diameter) to ensure secure attachment. Since the control arm is not adjustable, alignment checks after installation are recommended to maintain proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for durability and performance. The 521-254 control arm and ball joint assembly undergoes rigorous quality control to ensure reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship, providing confidence in the product's longevity.