Dorman 539-998 Suspension Ball Joint - Front Upper

Dorman 539-998 Front Upper Ball Joint

Dorman 539-998 is a threaded, press-in suspension ball joint built for the front upper position on select Ford Super Duty and related truck applications. It is precision-engineered and tested for dependable OE-style replacement performance on the vehicles listed below.

Key Features

• Front upper suspension ball joint for select Ford applications
• Threaded design with press-in mounting type
• Steel construction with gray finish
• Dust boot included; grease fitting not included
• Premium suspension grade type
• Mounting hardware included
• 12 mm wrench size and pinch-style stud

Product Details

This Dorman ball joint, part number 539-998, is built for the front upper suspension location on 1999-2022 Ford F-250 Super Duty and 1999-2022 Ford F-350 Super Duty, plus select Ford F-250, Ford F-350, and Ford Excursion applications. It also fits 1999 Ford F-250 with Twin I-Beam suspension. The steel body, polychloroprene dust boot, and press-in construction are specified for direct replacement use where the original upper ball joint has worn or loosened.

This part cross-references MOOG Chassis Products K80028 and Delphi TC6016 for the same application. Dorman 539-998 is a practical choice when servicing front suspension wear on Ford F-250 Super Duty, Ford F-350 Super Duty, and related models.

What It Helps Address

• Front-end looseness or play from a worn upper ball joint
• Clunking or knocking noises from the front suspension
• Uneven tire wear related to suspension joint wear
• Steering instability or wandering at the front axle
• Restoring proper suspension articulation at the upper control point

Installation Notes and Tips

Verify the front upper position and confirm vehicle-specific fitment before installation. This ball joint uses a press-in mounting type and a pinch-style stud with a 12 mm wrench size. The dust boot is included, while a grease fitting, castle nut, cotter pin, bushings, and washers are not included. Professional installation and proper suspension service tools are recommended for press-fit components.

Quality Assurance

Dorman states that this suspension ball joint is precision-engineered and rigorously tested to provide reliable replacement performance for the original equipment on specific vehicles. The premium-grade construction supports consistent fit and function for listed Ford applications.