Dorman 986-669 Drive Shaft - Rear

Dorman 986-669 Rear Drive Shaft for Ram 3500

Dorman 986-669 is a complete rear drive shaft assembly for select Ram 3500 trucks. It is pre-balanced and built with new yokes, tubes, universal joints, and a slip yoke/bold-on end configuration for straightforward replacement service.

Key Features

• Complete drive shaft assembly for the rear position
• Pre-balanced for installation readiness
• 100% new yokes, tubes, and universal joints
• Steel shaft construction with a 3.5 in. shaft diameter
• Compressed length: 98.875 in.
• Drive shaft wall thickness: 0.95 in.
• End 1 type: slip yoke
• End 2 type: bolt on
• Standard replacement grade
• Universal joints included; CV joints not included

Detailed Description

This Dorman drive shaft, part number 986-669, is built for 2013-2018 Ram 3500 rear applications. It replaces the original rear driveshaft assembly with a steel unit that arrives pre-balanced and assembled with new yokes, tubes, and universal joints. The slip yoke and bolt-on end design supports direct replacement service for Ram 3500 driveline repairs where the original shaft is worn, damaged, or out of balance.

This part cross-references OE numbers 5146779AA and 5146779AB for the same application.

What It Helps Fix

• Driveline vibration from a worn or out-of-balance shaft
• Clunking or driveline noise from failed universal joints
• Damage to the original shaft tube or yokes
• Excessive play in the rear driveline assembly
• Service issues caused by a bent or fatigued driveshaft

Installation Notes and Tips

Verify rear-position fitment before installation on 2013-2018 Ram 3500 trucks. Confirm compressed length, end types, and shaft dimensions against the original assembly to ensure proper alignment and driveline fit. Inspect related driveline components, mounting points, and seals during replacement to help avoid repeat vibration concerns.

Quality Assurance

Dorman supplies this assembly as a standard replacement driveline component with new yokes, tubes, and universal joints. The pre-balanced design supports a cleaner replacement process for Ram 3500 rear driveshaft service.