Dorman 521-548 Suspension Control Arm - Rear Right Lower Forward

Overview of Dorman Suspension Control Arm 521-548

The Dorman Suspension Control Arm 521-548 is engineered for reliable suspension performance on select Audi and Volkswagen models. Designed with durable steel construction and a coated black finish, this control arm provides essential support and stability for your vehicle's suspension system.

• Constructed from high-strength steel with casting and forging methods
• Includes a rubber bushing with black color and precise dimensions for fitment
• Overall length of 262.5 mm for accurate replacement
• Ball joint mounting type is welded with a threaded stud (ball joint not included)
• Coated finish for corrosion resistance and durability
• Compatible with multiple Audi and Volkswagen models including A3, Golf, Jetta, Passat, Tiguan, and TT

Detailed Product Description

This Dorman suspension control arm (part number 521-548) is designed to restore proper suspension geometry and handling characteristics on compatible Audi and Volkswagen vehicles. The control arm is made from steel using a combination of casting and forging processes to ensure strength and durability under road stress. It features a black coated finish that helps resist corrosion and wear over time.

The control arm includes a single rubber bushing with a 14.3 mm inside diameter and 39.6 mm outside diameter, providing effective vibration dampening and noise reduction. The bushing length is 92 mm, and the bushing is press-in type, ensuring a secure fit. The ball joint mounting is welded, and the stud is threaded, but the ball joint itself is not included with this part. Mounting hardware and brackets are also not included, so reusing existing components or purchasing separately is necessary.

Compatible Vehicles and Applications

This suspension control arm is compatible with a range of Audi and Volkswagen models, including:

• Audi A3, A3 Quattro, Q3, Q3 Quattro, RS Q3, S3, TT, TT Quattro
• Volkswagen Bora, CC, Eos, Golf, GTI, Jetta, Passat, Passat CC, Tiguan, Tiguan Limited, R32

It is designed to replace the trailing arm in the suspension system, helping maintain proper wheel alignment and vehicle handling.

Common Issues Addressed by This Control Arm

• Excessive suspension noise or clunking during driving
• Uneven tire wear due to misaligned suspension components
• Reduced steering responsiveness or vehicle instability
• Worn or damaged bushings causing vibration and harshness
• Suspension component failure leading to compromised safety

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before removal
• Inspect existing ball joint and mounting hardware; replace if worn
• Use proper tools to press out old bushings if necessary
• Torque all fasteners to manufacturer specifications
• Alignment check is recommended after installation

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-548 control arm undergoes rigorous quality control to ensure durability and performance. 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.