Dorman 926-163 Drive Axle Shaft Seal - Rear

Rear Axle Shaft O-Ring Seal

Dorman 926-163 is a rear axle shaft O-ring seal for Ford Super Duty and related rear axle applications. It seals the rear axle to the wheel hub and addresses axle fluid leaks around the wheel hub when the original seal has failed.

Built as a specific-fit compression seal, this axle shaft O-ring is made from FKM material for use in rear axle sealing service on Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Excursion applications.

Key Features

• Specific-fit rear axle shaft O-ring seal
• FKM material with black finish
• Compression seal design for rear axle-to-hub sealing
• Inside diameter: 2.984 in.
• Outside diameter: 3.262 in.
• Thickness: 0.139 in.
• Rim shape: round
• Fits rear axle service on Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Excursion applications

Detailed Description

Dorman 926-163 is a direct replacement axle shaft O-ring seal used at the rear axle and wheel hub interface. When the original seal wears out or hardens, axle fluid can begin leaking around the hub area. This seal restores the sealing surface with a specific-fit design sized for the application.

This part cross-references Ford E5TZ4A331A for the same application. It fits 1999-2022 Ford F-250 Super Duty, rear; 2005-2022 Ford F-350 Super Duty, rear SRW; 2005-2007 Ford F-350 Super Duty, rear DRW; 2000-2005 Ford Excursion, rear; 1999-2004 Ford F-350 Super Duty, rear 10.5 in. ring gear; 1997 Ford F-250 HD, rear 10.25 in. ring gear; 1980-1997 Ford F-350, rear 10.25 in. ring gear; and 1980-1996 Ford F-250, rear 10.25 in. ring gear.

What It Helps Solve

• Axle fluid leak around the wheel hub
• Seepage at the rear axle shaft seal area
• Loss of sealing at the axle-to-hub interface
• Seal deterioration from age and heat exposure
• Service issues on rear axle hubs in Ford Super Duty and Excursion applications

Installation Notes and Tips

Confirm axle and ring gear configuration before installation, especially on Ford F-350 Super Duty and older Ford F-250/F-350 applications. Clean the sealing surfaces thoroughly and inspect the hub area for wear, scoring, or contamination before installing the new O-ring.

Verify fitment by year, model, rear position, and axle configuration before service. Dorman 926-163 is a specific-fit seal, so correct application matching is important for proper sealing performance.

Quality Assurance

Dorman supplies application-specific replacement sealing components for driveline and axle service. This part is built to match the listed rear axle applications and restore the sealing function at the wheel hub interface.