SKF SDK321-KMK Axle Differential Bearing and Seal Kit - Rear

SKF Axle Differential Bearing and Seal Kit

SKF SDK321-KMK is an axle differential bearing and seal kit for rear differential service on a wide range of GM, Cadillac, GMC, Chevrolet, and related applications. It is built around the bearing and seal components needed for a complete differential repair, with SKF-engineered parts made to OE-level specifications.

For rear differential work on vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, this kit helps restore proper bearing support and sealing performance. The SKF SDK321-KMK is also a direct-fit service solution for many 8.50-inch and 8.625-inch ring gear applications.

Key Features

• SKF part number SDK321-KMK
• Axle differential bearing and seal kit for rear service
• Premium bearings with matching cones and cups
• Seals built to SKF standards with Bore-Tite coating for improved sealing performance
• Complete repair-focused kit for differential service applications
• Designed for vehicles using 8.50" and 8.625" ring gears where listed

Detailed Description

SKF SDK321-KMK is engineered for differential service where bearing wear or seal leakage has affected rear axle performance. The kit centers on high-quality bearings and seals, with components manufactured to meet or exceed original equipment specifications. In applications such as the Chevrolet Tahoe, GMC Yukon, and Cadillac Escalade, the kit supports a proper differential rebuild by replacing key wear items with matched bearing components and SKF sealing technology.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. The SKF SDK321-KMK is a practical choice for rear differential repair on Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade platforms when the original bearing and seal set needs replacement.

Common Repair Issues

• Rear differential bearing noise or growl
• Gear oil seepage at differential seals
• Excessive bearing wear during axle service
• Loss of sealing performance after differential teardown
• Need for a complete rear differential bearing and seal refresh

Installation Notes and Tips

Confirm axle and ring gear configuration before ordering, especially on 8.50" and 8.625" applications. Clean all mating surfaces thoroughly, inspect the differential housing for wear, and verify bearing preload and gear setup during installation. For best results, follow the vehicle service manual for torque values and setup procedures.

Quality Assurance

SKF manufactures this kit to high quality standards for long service life and safe operation. The included bearings use matched cones and cups, and the seals are produced to SKF specifications with Bore-Tite coating to improve sealing performance.

Compatible With

• Fits 2003-2008 Cadillac Escalade, Rear
• Fits 2003-2008 Cadillac Escalade ESV, Rear
• Fits 2003-2008 Cadillac Escalade EXT, Rear
• Fits 2007-2008 Chevrolet Avalanche, Rear
• Fits 2003-2008 Chevrolet Express 1500, Rear
• Fits 2003-2008 Chevrolet Silverado 1500, Rear
• Fits 2003-2008 Chevrolet Suburban 1500, Rear
• Fits 2003-2008 Chevrolet Tahoe, Rear
• Fits 2007-2008 Chevrolet Trailblazer, Rear
• Fits 2007-2008 GMC Envoy, Rear
• Fits 2003-2008 GMC Savana 1500, Rear
• Fits 2003-2008 GMC Sierra 1500, Rear
• Fits 2003-2008 GMC Yukon, Rear
• Fits 2003-2008 GMC Yukon XL 1500, Rear
• Fits 2003-2008 Isuzu Ascender, Rear
• Fits 2005-2008 Saab 9-7x, Rear
• Fits 2004-2007 Buick Rainier, Rear
• Fits 2007 Chevrolet Silverado 1500 Classic, Rear
• Fits 2007 Chevrolet Silverado 1500 HD Classic, Rear
• Fits 2007 GMC Sierra 1500 Classic, Rear
• Fits 2007 GMC Sierra 1500 HD Classic, Rear
• Fits 2007 GMC Yukon XL 2500, Rear
• Fits 2003-2006 Chevrolet SSR, Rear
• Fits 2003-2005 Chevrolet Avalanche 1500, Rear
• Fits 1999-2000 Isuzu Hombre, Rear