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SKF SDK321-Q Axle Differential Bearing and Seal Kit - RearOE Quality 60-Day Returns
Part #: CG-12

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

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SKF Axle Differential Bearing and Seal Kit

SKF SDK321-Q is an axle differential bearing and seal kit for rear differential service on select GM and Hummer applications. Built around the bearing and seal components needed for a complete differential repair, it is a practical choice for Silverado 1500, Sierra 1500, and Escalade rear axle service.

Key Features

  • Axle differential bearing and seal kit for rear driveline service
  • Inside diameter: 11.0000
  • Width: 2.500
  • Bearing type: DIFF4TP
  • SKF bearings use matched cones and cups for proper bearing set alignment
  • Seals are made to SKF standards with Bore-Tite coating for improved sealing performance
  • Designed for complete differential repair applications

Product Details

The SKF SDK321-Q is engineered for rear differential service where bearing wear, seal leakage, or driveline noise has developed. SKF builds these kits with high-quality bearings, seals, and gaskets where applicable, using components that meet or exceed original equipment specifications. This kit is a direct-fit service solution for rear axle maintenance on 2009-2015 Chevrolet Silverado 1500, 2009-2015 GMC Sierra 1500, and 2009-2014 Cadillac Escalade applications, along with other listed GM and Hummer rear axle platforms. This part cross-references 4620189100 and DRK-321Q for the same application.

What It Helps Fix

  • Rear differential bearing noise or rough operation
  • Oil seepage at differential seals
  • Wear-related driveline vibration from bearing deterioration
  • Service issues caused by damaged or fatigued differential sealing surfaces
  • Repeat repairs from incomplete differential rebuilds

Installation Notes and Tips

Verify rear axle ring gear size before ordering; this kit is listed for vehicles with 8.50" and 8.625" ring gears where noted. Confirm the bearing type and dimensions against the original components before installation. Clean all sealing surfaces thoroughly and inspect the differential housing, bearings, and races for wear before assembly. Professional differential setup procedures are recommended to ensure correct preload and gear contact pattern.

Quality Assurance

SKF manufactures this kit to high quality standards using matched bearing components and seals built for long service life. The included sealing technology is designed to improve sealing performance, and the kit is assembled to support a complete differential repair.

BrandATP Parts
Part NumberCG-12
LineCodeATP

This part fits 91 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2015ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2015GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2014CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2014CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2014ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2014ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2014ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2014GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2014GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2014GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2014GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2013CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2013CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2013CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2013ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2013ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2013ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2013ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2013GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2013GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2013GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2013GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2012CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2012CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2012CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2012ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2012ChevroletColoradoRearFits vehicles with 8.50" and 8.625" ring gears.
2012ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2012ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2012ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2012GMCCanyonRearFits vehicles with 8.50" and 8.625" ring gears.
2012GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2012GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2012GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2012GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2011CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2011CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2011CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletColoradoRearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletSilverado 2500RearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletSuburban 2500RearFits vehicles with 8.50" and 8.625" ring gears.
2011ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2011GMCCanyonRearFits vehicles with 8.50" and 8.625" ring gears.
2011GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2011GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2011GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2010CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2010CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletColoradoRearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletSuburban 2500RearFits vehicles with 8.50" and 8.625" ring gears.
2010ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2010GMCCanyonRearFits vehicles with 8.50" and 8.625" ring gears.
2010GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2010HummerH3RearStandard Kit; 8.50'' Ring Gear:
2010HummerH3TRearStandard Kit; 8.50'' Ring Gear:
2010HummerH3TRearStandard Kit; 8.50" Ring Gear:
2009CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2009CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2009CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletColoradoRearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletSilverado 2500RearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletSuburban 2500RearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2009ChevroletTrailblazerRearFits vehicles with 8.50" and 8.625" ring gears.
2009GMCCanyonRearFits vehicles with 8.50" and 8.625" ring gears.
2009GMCEnvoyRearFits vehicles with 8.50" and 8.625" ring gears.
2009GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2009GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2009GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2009HummerH35.3LV8RearStandard Kit; 8.50'' Ring Gear:
2009HummerH3RearStandard Kit; 8.50'' Ring Gear:
2009HummerH35.3LV8RearStandard Kit; 8.50" Ring Gear:
2009HummerH3TRearStandard Kit; 8.50'' Ring Gear:
2009HummerH3TRearStandard Kit; 8.50" Ring Gear:
2009Saab9-7xRearStandard Kit; 8.50'' Ring Gear:
2009Saab9-7xRearStandard Kit; 8.50" Ring Gear:

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

378902438846837570187570185086241448626281G12GK19

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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