Dorman 539-988 Suspension Ball Joint - Front Upper

Dorman 539-988 Front Upper Ball Joint

Dorman 539-988 is a threaded suspension ball joint engineered as a standard replacement for the original equipment on select Ford trucks and SUVs. It is built from steel with a grey finish, a dust boot, and a tapered stud for dependable front suspension service on applications such as the Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Bronco.

Key Features

• Steel construction for suspension durability
• Threaded design with press-in mounting type
• Tapered stud with cotter pin hole
• Dust boot included; dust boot material is polychloroprene
• Castle nut included
• Standard replacement suspension grade
• Grease fitting not included; greaseable design not specified
• Adjustable: No

Product Details

This Dorman suspension ball joint, part number 539-988, is precision-engineered and tested to replace the original equipment front upper ball joint on specific Ford applications. It uses a steel body, a 12 mm wrench size, and a tapered stud to support proper steering and suspension articulation. For shoppers searching for a Ford F-250 Super Duty front upper ball joint, Ford F-350 Super Duty front upper ball joint, or Ford Bronco front upper ball joint, this part number 539-988 matches the listed OE-style application coverage.

This part cross-references MOOG Chassis Products K80026 for the same application.

Vehicle Fitment

• Fits 1999-2022 Ford F-250 Super Duty, front upper
• Fits 1999-2022 Ford F-350 Super Duty, front upper
• Fits 2001-2009 Ford F-250, front upper
• Fits 1980-1996 Ford F-250, front upper
• Fits 2000-2005 Ford Excursion, front upper
• Fits 1997 Ford F-250, front upper, w/Twin I-Beam Axle
• Fits 1997 Ford F-250 HD, front upper
• Fits 1992-1997 Ford F-350, front upper, w/Monobeam Suspension
• Fits 1980-1996 Ford Bronco, front upper
• Fits 1980-1996 Ford F-150, front upper
• Fits 1980-1985 Ford F-350, front upper, w/Twin I-Beam Suspension

Installation Notes and Tips

Confirm the front upper position and suspension configuration before installation, especially on 1997 Ford F-250, 1992-1997 Ford F-350, and 1980-1985 Ford F-350 applications with axle or suspension notes. Inspect the mating surfaces, replace worn hardware as needed, and verify the tapered stud seats correctly before final torque. The cotter pin hole and castle nut design should be secured according to the vehicle service procedure.

Quality Assurance

Dorman manufactures this ball joint as a direct replacement component for specific OE applications and subjects it to engineering and testing validation before release. Part number 539-988 is built to meet the demands of front suspension service on Ford truck and SUV platforms.