Delphi TC660 Suspension Ball Joint - Front Upper

Delphi TC660 Front Upper Ball Joint

Delphi TC660 is a suspension ball joint built for front upper applications on select Toyota trucks and SUVs. It combines OE-based dimensional and material analysis with a steel construction, dust boot protection, and bolt-on mounting for a direct-service replacement on the Toyota T100, 4Runner, and Pickup.

Key Features

• Steel ball joint assembly with gray finish
• Front upper suspension application
• Bolt-on mounting type with 4 mounting holes
• Dust boot included; chloroprene rubber (CR) boot material
• Castle nut, cotter pin, nuts, and mounting bolts included
• Non-greaseable, standard suspension grade design
• Threaded, tapered stud with cotter pin hole
• OE-focused fitment and dimensional analysis for application matching

Detailed Description

Delphi TC660 is engineered as a front upper suspension ball joint for 1986-1995 Toyota 4Runner, 1986-1995 Toyota Pickup, and 1993-1998 Toyota T100 applications, with a 1996 Toyota 4Runner front upper fitment limited to vehicles built to 11/1995. The steel ball joint assembly uses a threaded, tapered stud and includes a dust boot to help protect the joint interface from road contamination. Delphi’s OE-oriented testing includes exposure to extreme temperatures and extended salt-spray testing, supporting durability in demanding undercar conditions. This part cross-references MOOG Chassis Products K9482 and Mevotech Supreme MK9482 for the same application.

Common Problems This Part Can Address

• Front-end looseness or play at the upper suspension joint
• Clunking or knocking from the front suspension over bumps
• Uneven tire wear related to worn suspension geometry
• Steering wander or reduced directional stability
• Visible boot damage or contamination at the joint

Installation Notes and Tips

Fits 1986-1995 Toyota 4Runner, front upper. Fits 1996 Toyota 4Runner, front upper, to 11/1995. Fits 1986-1995 Toyota Pickup, front upper. Fits 1993-1998 Toyota T100, front upper. Confirm the stud taper, mounting-hole pattern, and vehicle build date before installation. Because this is a bolt-on front upper ball joint, inspect the surrounding control arm and fasteners for wear or corrosion before assembly. Delphi TC660 should be installed with the suspension supported and aligned after service to verify proper steering and tire wear characteristics.

Quality Assurance

Delphi applies OE-level engineering practices to its aftermarket steering and suspension portfolio, including dimensional and material analysis for fitment accuracy. The TC660 is tested for temperature extremes below -40 degrees C and above 120 degrees C, and it is exposed to 720 hours of salt spray to evaluate corrosion resistance.