SKF SDK331-BMK Axle Differential Bearing and Seal Kit - Rear

Axle Differential Bearing and Seal Kit for Rear Service

SKF SDK331-BMK is an axle differential bearing and seal kit built for rear differential service on select Chevrolet Express, GMC Savana, and Ford Super Duty applications. It is centered around the 11.0000 inside diameter, 2.500 width, DIFF3TP bearing type, with seals made to SKF standards and Bore-Tite coating for improved sealing performance.

Key Features

• Axle differential bearing and seal kit for rear differential repair
• 11.0000 inside diameter and 2.500 width
• DIFF3TP bearing type
• Bearings include matching cones and cups
• Seals use SKF Bore-Tite coating to improve sealing performance
• Built for Chevrolet Express 2500, GMC Savana 2500, Chevrolet Express 3500, GMC Savana 3500, Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford F-250 rear applications

Detailed Description

SKF SDK331-BMK is engineered as a complete differential service kit for rear axle repair. SKF supplies the bearing components with matched cones and cups, along with seals designed to meet or exceed original equipment specifications. For vehicles such as the Ford F-250 Super Duty, Ford F-350 Super Duty, Chevrolet Express 2500, and GMC Savana 2500, this kit supports a proper differential rebuild when the rear axle bearings or seals show wear. Part number SDK331-BMK is also referenced in service and interchange listings for related axle repair applications.

This part cross-references 1-204-131 and 63903 for the same application.

Common Repair Symptoms

• Rear differential noise or bearing rumble
• Gear oil seepage at the axle or differential seal area
• Excessive play or roughness during differential inspection
• Service needs after teardown of the rear axle assembly
• Leak-related contamination around the differential housing

Installation Notes and Tips

Confirm axle and ring gear specifications before ordering, including the 9.75-inch ring gear note shown in fitment. Inspect the housing, races, and related wear surfaces during installation, and replace damaged components as needed. Proper setup of bearing preload and seal alignment is important for a lasting repair on rear differential service. Verify vehicle application by year, make, model, and rear position before installing SDK331-BMK.

Quality Assurance

SKF manufactures this kit to high quality standards for long service life and safety. The included bearings, seals, and related components are built to meet or exceed original equipment specifications, with Bore-Tite seal coating used to improve sealing performance.

Vehicle Fitment

• Fits 2003-2013 Chevrolet Express 2500, rear, Master Kit; 9.75'' Ring Gear
• Fits 2003-2013 GMC Savana 2500, rear, Master Kit; 9.75'' Ring Gear
• Fits 2003-2010 Chevrolet Express 3500, rear, Master Kit; 9.75'' Ring Gear
• Fits 2003-2010 GMC Savana 3500, rear, Master Kit; 9.75'' Ring Gear
• Fits 1999-2008 Ford F-250 Super Duty, rear, Master Kit; 9.75'' Ring Gear
• Fits 1999-2008 Ford F-350 Super Duty, rear, Master Kit; 9.75'' Ring Gear
• Fits 1998-1999 Ford F-250, rear, Master Kit; 9.75'' Ring Gear