Home› SKF SDK321-K Axle Differential Bearing and Seal Kit - Rear
SKF SDK321-K Axle Differential Bearing and Seal Kit - RearOE Quality 60-Day Returns
Part #: SDK321-K

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

Rear
⚙️ 106 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$209.28Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
Out of Stock
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick, Cadillac, Chevrolet, GMC, Isuzu, and Saab, 9-7x, Ascender, Avalanche, Avalanche 1500, Envoy, Escalade, Escalade ESV, Escalade EXT, Express 1500, Hombre, Rainier, Savana 1500, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD Classic, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD Classic, SSR, Suburban 1500, Tahoe, Trailblazer, Yukon, Yukon XL 1500, and Yukon XL 2500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Axle Differential Bearing and Seal Kit options

SKF Axle Differential Bearing and Seal Kit SDK321-K

SKF SDK321-K is an axle differential bearing and seal kit for rear differential service on select GM, Cadillac, Buick, Isuzu, and Saab applications. It is built around the bearing and seal components needed for a complete differential repair, with premium bearings that include matched cones and cups and seals made to SKF standards with Bore-Tite coating for improved sealing performance.

Key Features

  • Part number: SDK321-K
  • Axle differential bearing and seal kit for rear service
  • Inside diameter: 11.0000
  • Width: 2.500
  • Bearing type: DIFF2TP
  • Includes high-quality bearings, seals, and gaskets where applicable
  • Matched bearing cones and cups supplied as a set
  • SKF seal design with Bore-Tite coating for enhanced sealing performance

Detailed Description

SKF SDK321-K is engineered for rear differential repair on vehicles using 8.50-inch and 8.625-inch ring gears in the listed applications. It is a practical choice for service work on models such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, where bearing wear or seal leakage can affect differential operation. This part cross-references 1T434 and 1458LM603049 for the same application.

SKF packages the core components needed for a complete repair, helping reduce repeat teardown work caused by missing wear items. The kit is intended for service technicians and DIY repairers who need a direct-fit differential bearing and seal solution for rear axle maintenance.

What It Helps Repair

  • Rear differential bearing noise
  • Gear oil leaks at the differential seal area
  • Wear-related driveline vibration from bearing deterioration
  • Service issues during differential rebuilds on 8.50-inch and 8.625-inch ring gear applications
  • Repeat repairs caused by replacing only part of the wear set

Installation Notes and Fitment

  • 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

Verify ring gear size before ordering; listed applications require 8.50-inch or 8.625-inch rear ring gear configurations. Part number SDK321-K should be matched to the axle and differential specification during service.

Quality Assurance

SKF manufactures these kits to meet or exceed original equipment specifications, using premium bearing components and seals built to SKF standards. The kit is designed for long service life and dependable differential repair performance.

BrandSKF
Part NumberSDK321-K
Inside Diameter11.0000
Width2.500
Bearing TypeDiff2tp

This part fits 106 vehicles. Search below:

YearMakeModelPositionNotes
2008CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2008CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2008CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2008ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2008ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2008ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2008ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2008ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2008ChevroletTrailblazerRearFits vehicles with 8.50" and 8.625" ring gears.
2008GMCEnvoyRearFits vehicles with 8.50" and 8.625" ring gears.
2008GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2008GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2008GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2008GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2008IsuzuAscenderRearFits vehicles with 8.50" and 8.625" ring gears.
2008Saab9-7xRearFits vehicles with 8.50" and 8.625" ring gears.
2007BuickRainierRearStandard Kit; 8.50'' Ring Gear:
2007BuickRainierRearStandard Kit; 8.50" Ring Gear:
2007CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2007CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2007CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletAvalancheRearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletSilverado 1500 ClassicRearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletSilverado 1500 HD ClassicRearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2007ChevroletTrailblazerRearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCEnvoyRearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCSierra 1500 ClassicRearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCSierra 1500 HD ClassicRearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2007GMCYukon XL 2500RearFits vehicles with 8.50" and 8.625" ring gears.
2007IsuzuAscenderRearFits vehicles with 8.50" and 8.625" ring gears.
2007Saab9-7xRearFits vehicles with 8.50" and 8.625" ring gears.
2006BuickRainierRearStandard Kit; 8.50'' Ring Gear:
2006BuickRainierRearStandard Kit; 8.50" Ring Gear:
2006CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2006CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2006CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2006ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2006ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2006ChevroletSSRRearFits vehicles with 8.50" and 8.625" ring gears.
2006ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2006ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2006GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2006GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2006GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2006GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2006IsuzuAscenderRearFits vehicles with 8.50" and 8.625" ring gears.
2006Saab9-7xRearFits vehicles with 8.50" and 8.625" ring gears.
2005BuickRainierRearStandard Kit; 8.50'' Ring Gear:
2005BuickRainierRearStandard Kit; 8.50" Ring Gear:
2005CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2005CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2005CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2005ChevroletAvalanche 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005ChevroletSSRRearFits vehicles with 8.50" and 8.625" ring gears.
2005ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2005GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2005GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2005IsuzuAscenderRearFits vehicles with 8.50" and 8.625" ring gears.
2005Saab9-7xRearFits vehicles with 8.50" and 8.625" ring gears.
2004BuickRainierRearStandard Kit; 8.50'' Ring Gear:
2004BuickRainierRearStandard Kit; 8.50" Ring Gear:
2004CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2004CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2004CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2004ChevroletAvalanche 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004ChevroletSSRRearFits vehicles with 8.50" and 8.625" ring gears.
2004ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2004GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2004GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2004IsuzuAscenderRearFits vehicles with 8.50" and 8.625" ring gears.
2003CadillacEscaladeRearFits vehicles with 8.50" and 8.625" ring gears.
2003CadillacEscalade ESVRearFits vehicles with 8.50" and 8.625" ring gears.
2003CadillacEscalade EXTRearFits vehicles with 8.50" and 8.625" ring gears.
2003ChevroletAvalanche 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003ChevroletExpress 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003ChevroletSilverado 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003ChevroletSSRRearFits vehicles with 8.50" and 8.625" ring gears.
2003ChevroletSuburban 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003ChevroletTahoeRearFits vehicles with 8.50" and 8.625" ring gears.
2003GMCSavana 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003GMCSierra 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003GMCYukonRearFits vehicles with 8.50" and 8.625" ring gears.
2003GMCYukon XL 1500RearFits vehicles with 8.50" and 8.625" ring gears.
2003IsuzuAscenderRearFits vehicles with 8.50" and 8.625" ring gears.
2000IsuzuHombreRearStandard Kit; 8.50'' Ring Gear:
2000IsuzuHombreRearStandard Kit; 8.50" Ring Gear:
1999IsuzuHombreRearStandard Kit; 8.50'' Ring Gear:
1999IsuzuHombreRearStandard 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:

12569915144070C911458LM60304917902651T434486421074511419759LM603012GHB197XJD55541

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

Related Articles