Delphi TC350 Suspension Ball Joint - Rear Lower

Delphi TC350 Rear Lower Ball Joint

Delphi TC350 is a standard replacement suspension ball joint built for rear lower applications on select Audi models. It combines a steel body, threaded stud design, dust boot protection, and bolt-on mounting to support precise suspension movement and OE-style fitment.

• Steel construction with gray finish
• Ball joint assembly with dust boot included
• Threaded stud with tapered end design
• Bolt-on mounting with mounting bolts included
• Standard replacement grade for rear lower suspension service
• Compatible with select Audi 80, 90, 4000 Quattro, and Quattro applications

OE-Style Suspension Service

Delphi applies OE-focused dimensional and material analysis to its aftermarket steering and suspension portfolio, and the TC350 follows that approach for rear lower suspension repair. It is built to match the required geometry for select 1983-1989 Audi applications, including 1988-1989 Audi 80 rear lower, 1988-1989 Audi 90 rear lower, 1988-1989 Audi 80 Quattro rear lower to VIN J351000, 1988-1989 Audi 90 Quattro rear lower to VIN J351000, 1985-1987 Audi 4000 Quattro rear lower, and 1983-1986 Audi Quattro rear lower. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. The Delphi TC350 is a practical choice when replacing a worn rear lower ball joint on Audi 80, Audi 90, or Quattro suspension systems.

What It Helps Correct

• Clunking or knocking from the rear suspension
• Excessive play in the rear lower control arm connection
• Uneven tire wear caused by suspension looseness
• Imprecise rear suspension response over bumps and turns
• Inspection failures related to worn ball joint movement

Installation Notes

Verify the vehicle’s year, model, rear lower position, and VIN note before ordering, especially on Audi Quattro applications listed to VIN J351000. Inspect the surrounding control arm, fasteners, and mounting points for wear or damage before installation. The threaded stud uses a 12.0 mm thread diameter with a 1.5 mm pitch, and the bolt-on design uses two mounting holes with included mounting bolts.

Quality Assurance

Delphi subjects its OE-based steering and suspension parts to temperature extremes below -40 degrees C and above 120 degrees C, along with 720 hours of salt spray exposure. That testing, combined with dimensional and material analysis, supports consistent fit and corrosion resistance for service on select Audi rear lower suspension applications.