Delphi TC3676 Suspension Ball Joint - Front Lower or Front Lower Forward

Delphi TC3676 Front Lower Ball Joint

Delphi TC3676 is a standard replacement suspension ball joint built for front lower applications on select Audi A8 Quattro and Audi S8 models. It combines OE-focused dimensional and material analysis with testing for extreme temperatures and salt exposure to support consistent steering and suspension performance.

Key Features

• Ball joint assembly for front lower suspension service
• Alloy steel SAE 5140 ball and carbon steel SAE 1040 housing
• Dust boot included to help protect the joint from contamination
• Mounting hardware, nuts, and mounting bolts included
• Non-greaseable, sealed design with no grease fitting
• Standard replacement part number TC3676
• Cross-reference: 4H0 407 689 A

Detailed Description

Delphi TC3676 is engineered for front lower forward and front lower positions on Audi suspension systems where precise fit and stable joint movement matter. The ball joint uses an alloy steel SAE 5140 ball, a carbon steel SAE 1040 housing, and a chloroprene rubber dust boot to help maintain durability in demanding road conditions. Delphi’s OE-based design approach focuses on dimensional accuracy and material compatibility, making this part a direct service option for Audi A8 Quattro and Audi S8 front suspension repair.

Fits 2010-2011 Audi A8 Quattro, Front Lower Forward. Fits 2012-2017 Audi A8 Quattro, Front Lower. Fits 2018 Audi A8 Quattro, Front Lower Forward. Fits 2013-2017 Audi S8, Front Lower. Fits 2018 Audi S8, Front Lower Forward. Delphi TC3676 is a practical choice when replacing worn front suspension ball joints on these applications.

What It Helps Fix

• Front suspension looseness or play
• Clunking or knocking from the lower control arm area
• Uneven tire wear caused by worn joint movement
• Steering wander or reduced front-end stability
• Inspection failure from excessive ball joint wear

Installation Notes

Confirm the exact position before ordering: this part is listed for front lower forward and front lower applications depending on model year. Verify bolt pattern, mounting hole quantity, and dimensions against the original part before installation. This assembly is non-adjustable and non-greaseable, so proper alignment after replacement is recommended.

Quality Assurance

Delphi applies OE-level engineering and validation to its steering and suspension portfolio. TC3676 is tested across extreme temperature ranges and exposed to extended salt spray testing to evaluate durability and corrosion resistance in real-world service conditions.