Dorman 539-987 Suspension Ball Joint - Front Upper

Dorman 539-987 Suspension Ball Joint

Dorman 539-987 is a threaded suspension ball joint built as a direct replacement for the original equipment on specific vehicles. It is precision-engineered and tested for dependable steering and suspension service, with OE-style details that matter during repair.

Compatible With Ford Super Duty applications, this ball joint supports front suspension service where a worn joint can affect alignment and steering response. The Dorman 539-987 also cross-references MOOG Chassis Products (e.g., K500087, K500087T005) for the same application.

Key Features

• Threaded, press-in style suspension ball joint
• Steel construction with gray finish
• Greaseable design for serviceable lubrication
• Dust boot included to help protect the joint
• Castle nut included; cotter pin hole provided
• Premium suspension grade type
• Tapered stud design with 12 mm wrench size
• Mounting hardware included

Detailed Description

This suspension ball joint is built from steel and measures 111 mm in length, 59 mm in width, and 85.03 mm in height, with a maximum outside diameter of 61 mm. It uses a tapered stud with 35.5 mm stud thread length and a press-in mounting type, making it a practical OE-style replacement for front suspension repair on Ford Super Duty trucks and related applications. The Dorman 539-987 is greaseable, includes a dust boot made from polychloroprene, and is supplied with a castle nut for installation.

For buyers searching by vehicle and part number, Dorman 539-987 is a strong match for Ford Super Duty front suspension service where ball joint wear has created looseness, noise, or uneven tire wear. This part number also appears in interchange listings for Centric Parts 610.65007 and Delphi TC5255.

What It Helps Fix

• Front-end clunking or popping from a worn ball joint
• Steering looseness or wandering
• Uneven or accelerated tire wear caused by suspension play
• Excessive movement at the steering knuckle connection
• Inspection failure from a damaged or loose suspension joint

Installation Notes

Verify vehicle application by year, make, model, and suspension configuration before installation. This is a press-in ball joint, so proper removal and installation tools are recommended to avoid damage to the control arm or knuckle. Clean the mounting area, confirm the tapered stud seats correctly, and torque the castle nut to the vehicle specification before installing the cotter pin through the provided hole.

Quality Assurance

Dorman states that this suspension ball joint is precision-engineered and rigorously tested to provide a reliable replacement for the original equipment on specific vehicles. The part is built to premium suspension standards and includes OE-style features such as a dust boot and greaseable service design.