Dorman 986-939 Drive Shaft - Rear

Dorman 986-939 Drive Shaft for BMW Rear Applications

Dorman 986-939 is a complete rear drive shaft assembly for select BMW 645Ci and 650i models. It is pre-balanced and built with new yokes, tubes, CV joints, and universal joints to simplify replacement on the correct rear-drive application.

Key Features

• Complete drive shaft assembly for rear installation
• Pre-balanced for direct replacement use
• 100% new yokes, tubes, constant velocity joints, and universal joints
• Steel shaft construction with a 2.5 in shaft diameter
• Pre-greased and supplied as a standard replacement part
• End 1 and End 2 are bolt-on connections
• Overall length adjustable with a 56.875 in collapsed flange-to-flange length

Detailed Description

This Dorman drive shaft is engineered for BMW rear driveline service where the original shaft has worn joints, vibration, or balance issues. The assembly measures 57.375 in drive shaft length with 0.083 in wall thickness and a 0.5 max slip specification, and it is configured without a slip yoke and without a grease fitting. It also includes CV joints and universal joints, with a phased design listed at 0 degrees.

Compatible With 2005 BMW 645Ci, rear, wo/Sequential Manual Gearbox (SMG). Compatible With 2006-2010 BMW 650i, rear, wo/Sequential Manual Gearbox (SMG). This part cross-references 26107547218 for the same application. Dorman 986-939 is a direct-fit driveline service part for BMW 645Ci and BMW 650i rear applications that require a bolt-on replacement shaft.

What It Helps Fix

• Driveline vibration from a worn or out-of-balance shaft
• Clunking or noise from worn universal joints
• Binding or rough operation from worn CV joints
• Failure of the original shaft tube or yokes
• Service issues on rear BMW driveline assemblies

Installation Notes and Tips

Verify rear fitment by model year and transmission configuration before installation. This assembly uses bolt-on ends and is intended for vehicles without Sequential Manual Gearbox (SMG). Confirm flange alignment, overall length, and driveline condition during replacement to help ensure proper operation after installation.

Quality Assurance

Built as a standard replacement driveline assembly, this Dorman 986-939 drive shaft is supplied pre-balanced and assembled with new major wear components for consistent service on the specified BMW applications.