Delphi TC707 Suspension Ball Joint - Front Left Lower

Delphi TC707 Front Left Lower Ball Joint

Delphi TC707 is a standard replacement suspension ball joint for select Audi applications, including the front left lower position on 1988 Audi 80 and 1991 Audi 90. Built with a steel body, dust boot, and bolt-on mounting design, it supports OE-style serviceability for front suspension repair.

Key Features

• Part number: TC707
• Front left lower suspension ball joint
• Fits 1988 Audi 80 and 1991 Audi 90
• Steel construction with gray finish
• Dust boot included; chloroprene rubber (CR) boot material
• Bolt-on mounting type with mounting hardware, bolts, nuts, and washers included
• Standard replacement, non-adjustable, non-greaseable design
• 17 mm wrench size and 17 mm pinch bolt fitment note for listed applications

Detailed Description

Delphi TC707 is engineered as a standard replacement suspension ball joint for the front left lower position. It is listed for 1988 Audi 80 and 1991 Audi 90 applications, making it a direct-fit option for owners servicing front suspension wear on these vehicles. Delphi applies OE-focused dimensional and material analysis to help maintain proper part compatibility, and the component is tested across extreme temperature and salt-spray exposure conditions to validate durability in demanding environments. If you are replacing a worn front suspension ball joint on an Audi 80 or Audi 90, TC707 provides the correct bolt-on format and included dust boot for a clean service replacement.

This part cross-references Mevotech Supreme MK9911 for the same application.

What It Helps Fix

• Front suspension looseness or play at the lower ball joint
• Clunking or knocking from the front left suspension
• Uneven steering response caused by worn joint movement
• Boot damage that exposes the joint to contamination
• Inspection failures related to front suspension wear

Installation Notes and Tips

Verify the vehicle application before installation: Fits 1988 Audi 80, front left lower, 17mm pinch bolt; Fits 1991 Audi 90, front left lower, 17mm pinch bolt. The bolt-on mounting design uses two mounting holes and includes mounting bolts, nuts, and washers. Confirm the 17 mm wrench size and the 10 mm mounting bolt dimensions match the vehicle’s suspension hardware before service. Always inspect the surrounding control arm and fasteners for wear or damage during replacement.

Quality Assurance

Delphi uses OE-based engineering practices for its steering and suspension portfolio, with testing that includes extreme temperature cycling and extended salt-spray exposure. The TC707 is built as a standard replacement part for consistent fit and service life in the listed Audi applications.