Dorman 521-509 Suspension Control Arm - Rear Upper Forward

Durable Aluminum Suspension Control Arm for Audi, Porsche, Volkswagen

The Dorman 521-509 suspension control arm is engineered to provide reliable performance for Audi Q7, Porsche Cayenne, and Volkswagen Touareg models. Crafted from aluminum with a coated black finish, this control arm offers a balance of strength and corrosion resistance for your vehicle's suspension system.

• Constructed from durable aluminum with casting and forging techniques
• Black coated finish for enhanced corrosion protection
• Includes a rubber bushing with black color for vibration dampening
• Overall length of 262.5 mm for precise fitment
• Welded ball joint mounting with threaded stud type (ball joint not included)
• Press-in end type with one bushing included

Product Details and Specifications

This suspension control arm features a robust aluminum construction combining casting and forging methods to ensure structural integrity. The black coated finish helps resist rust and wear over time. It includes a single rubber bushing with an inside diameter of 14.3 mm, outside diameter of 39.6 mm, and a length of 92 mm, designed to absorb road vibrations and improve ride quality. The ball joint mounting is welded with a threaded stud type, though the ball joint itself is not included. The control arm measures 262.5 mm in overall length and uses a press-in type for the second end, ensuring compatibility with the suspension linkage bushing design.

Compatible Vehicles and Applications

• Designed specifically for Audi Q7 suspension systems
• Compatible with Porsche Cayenne models requiring this control arm
• Fits Volkswagen Touareg vehicles with matching suspension specifications

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Corroded or weakened control arm compromising suspension alignment
• Excessive vibration or noise from faulty suspension components
• Improper suspension geometry affecting tire wear and handling

Installation Notes and Tips

Installation requires removal of the existing control arm and proper alignment of the new part. Since the ball joint is not included, ensure compatibility with your vehicle’s existing ball joint or replace it separately if needed. The control arm does not come with mounting hardware, so retain original bolts or source appropriate replacements. Use proper torque specifications and alignment checks after installation to maintain suspension performance.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet OEM standards for fit and function. The 521-509 control arm undergoes quality inspections to ensure durability and performance. While specific warranty details are not provided, Dorman parts typically come with limited warranties covering defects in materials and workmanship.