Dorman 986-959 Drive Shaft - Rear

Dorman 986-959 Drive Shaft Overview

Dorman 986-959 is a complete rear drive shaft assembly for the 1985 Ford F-250 with a 10.25 in. axle. It arrives pre-balanced and ready to install with new yokes, steel tubing, a slip yoke, universal joints, and pre-greased service points for a direct replacement on the Ford F-250 rear driveline.

Key Features

• Complete drive shaft assembly for rear application
• Pre-balanced for installation readiness
• Steel shaft construction with 3 in. shaft diameter
• Pre-greased with grease fitting included
• Universal joints included; CV joints not included
• Slip yoke included with 1 in. max slip
• Phased at 0 degrees
• Compressed length: 77.75 in.; drive shaft length: 78.75 in.
• Standard replacement grade

Detailed Description

This Dorman drive shaft assembly is built as a direct replacement for the rear driveline on the 1985 Ford F-250, including the 10.25 in. axle application. The assembly uses 100% new yokes, tubes, and universal joints, and it is pre-balanced to reduce the need for additional setup before installation. Part number 986-959 is also referenced for interchange with E5TZ4602H.

With a steel shaft, 0.083 in. wall thickness, and overall length adjustable design, Dorman 986-959 supports driveline service where the original shaft is worn, damaged, or out of balance. The rear Ford F-250 drive shaft replacement is configured with universal joint ends at both sides and a slip yoke, making it a practical OE-style solution for restoring driveline function.

What This Drive Shaft Helps Resolve

• Vibration from a worn or out-of-balance rear drive shaft
• Clunking or driveline noise from worn universal joints
• Driveline play caused by damaged yokes or slip components
• Service issues from a bent, corroded, or fatigued shaft tube
• Fitment problems when replacing the original Ford F-250 rear shaft

Installation Notes and Tips

Verify rear axle configuration and measure the existing shaft before installation. Confirm the compressed length, flange-to-flange dimensions, and slip travel against the original driveline to ensure proper fit on the 1985 Ford F-250. Inspect companion flange, transfer case output, and axle-side mounting surfaces for wear before installing Dorman 986-959.

Quality Assurance

Dorman supplies this as a standard replacement drive shaft assembly with new core components and pre-balanced construction. The design focuses on restoring driveline service with the correct rear application for the 1985 Ford F-250.