Dorman 539-908 Suspension Ball Joint - Front Upper

Dorman 539-908 Front Upper Ball Joint

Dorman 539-908 is a threaded suspension ball joint engineered as a direct replacement for specific Toyota front upper applications. It is built from steel with a grey finish and includes a dust boot, castle nut, cotter pin hole, and mounting hardware for a service-ready repair on Toyota T100, 4Runner, and Pickup models.

Key Features

• Precision-engineered replacement suspension ball joint for OE-style fit and function
• Steel construction with a threaded design for front upper suspension service
• Dust boot included to help protect the joint from road debris and moisture
• Castle nut included with cotter pin hole for secure fastening
• Premium suspension grade type for demanding front-end repair work
• Bolt-in mounting type with 4 mounting holes and tapered stud design
• Grease fitting not included; non-greaseable design

Detailed Description

Dorman 539-908 is a front upper suspension ball joint made for direct replacement on 1986-1995 Toyota 4Runner, 1986-1995 Toyota Pickup, and 1993-1998 Toyota T100 applications. The steel body, threaded construction, and tapered stud support accurate suspension geometry in the front upper position. This part cross-references MOOG Chassis Products K9482 and Delphi TC660 for the same application.

Use Dorman 539-908 when servicing worn front upper ball joints on Toyota 4Runner, Toyota Pickup, or Toyota T100 models. The included dust boot and mounting hardware support a complete repair, while the cotter pin hole and castle nut help secure the stud connection during installation.

What It Helps Repair

• Front-end looseness or play from a worn upper ball joint
• Clunking or popping noises from the front suspension
• Uneven tire wear caused by suspension joint wear
• Steering wander or reduced front-end stability
• Suspension inspection failures related to ball joint wear

Installation Notes and Tips

Fits 1986-1995 Toyota 4Runner, front upper. Fits 1986-1995 Toyota Pickup, front upper. Fits 1993-1998 Toyota T100, front upper. Confirm the front upper position before installation and verify stud engagement, castle nut alignment, and cotter pin hole orientation during assembly. The 12 mm wrench size and bolt-in mounting layout should be matched to the vehicle’s service procedure.

Quality Assurance

Dorman states this suspension ball joint is precision-engineered and rigorously tested to provide a reliable replacement for the original equipment on specific vehicles. The premium suspension grade and OE-style construction support consistent service quality for front suspension repair.