Delphi TC501 Suspension Ball Joint - Front Right Lower

Delphi Suspension Ball Joint TC501 Overview

The Delphi TC501 suspension ball joint is engineered for reliable performance in Audi 80, 80 Quattro, 90, and 90 Quattro models. Constructed from durable steel with a black finish, this standard suspension grade ball joint assembly is designed to maintain precise steering and suspension control.

• Material: Steel construction for strength and durability
• Maximum outside diameter: 56.5 mm (2.224 inches)
• Length: 140 mm
• Includes dust boot made of chloroprene rubber (CR) for protection
• Mounting hardware included: bolts, nuts, and washers
• Mounting type: bolt-on with 3 mounting holes and 48 mm distance between holes
• Wrench size required: 17 mm (0.669 inches)
• Non-greasable, standard suspension grade ball joint

Detailed Product Description

The Delphi TC501 suspension ball joint is a direct replacement part designed specifically for Audi 80 and 90 series vehicles, including Quattro variants. Its steel construction ensures structural integrity under typical driving conditions, while the black finish provides corrosion resistance. The included chloroprene rubber dust boot protects the joint from dirt and moisture, extending service life. This ball joint assembly comes complete with mounting hardware such as bolts, nuts, and washers, facilitating a straightforward bolt-on installation. The mounting bolt length is 30 mm with a shank diameter of 10 mm (0.394 inches), and the assembly features three mounting holes spaced 48 mm apart. This part is not greaseable and does not include a castle nut or cotter pin, consistent with the original equipment specifications.

Compatible Vehicles and Applications

This suspension ball joint is compatible with the following Audi models:

• Audi 80 (including 80 Quattro)
• Audi 90 (including 90 Quattro)

It is designed to restore proper suspension articulation and steering response in these vehicles, ensuring safe and stable handling.

Common Issues Addressed by Delphi TC501 Ball Joint

• Excessive play or looseness in the suspension linkage
• Uneven tire wear caused by worn ball joints
• Clunking or knocking noises during steering or over bumps
• Reduced steering precision and vehicle stability
• Protection against dust and debris infiltration with the included dust boot

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before removal
• Use a 17 mm wrench for mounting bolts and nuts
• Verify mounting hole alignment and torque specifications per Audi service manual
• Inspect surrounding suspension components for wear during installation
• Replacement does not require grease fitting as the joint is sealed

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet or exceed OEM standards. The TC501 ball joint undergoes rigorous quality control to ensure durability and fitment accuracy. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product reliability.