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Luk GDK321J Axle Differential Bearing and Seal Kit - FrontOE Quality 60-Day Returns
Part #: GDK321J

Luk GDK321J Axle Differential Bearing and Seal Kit - Front

Front
⚙️ 207 vehicles fit this part
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LuK Differential Bearing Kit GDK321J

LuK GDK321J is a differential bearing and seal kit for front axle service on a wide range of GM trucks and SUVs. It brings together OE-quality bearings selected for the specific transmission or differential application, helping restore proper bearing support during a professional driveline repair.

This part cross-references Timken DRK321J for the same application.

Key Features

  • Part type: axle differential bearing and seal kit
  • OE-quality bearing components selected for the application
  • Front axle service kit for driveline repair work
  • Built for professional transmission and differential service
  • Part number: GDK321J

Detailed Description

LuK GDK321J is used when servicing the front differential on vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon. It is a practical repair solution when worn bearings are causing noise, rough operation, or internal drivetrain wear. The kit is also listed for applications including the Chevrolet Suburban 1500, GMC Yukon XL, and Avalanche with the 8.25-inch front axle configuration.

Compatible With 2019-2022 Chevrolet Silverado 1500, front; 2022 Chevrolet Silverado 1500 LTD, front; 2019-2022 GMC Sierra 1500, front; 2022 GMC Sierra 1500 Limited, front; 2002-2020 Cadillac Escalade, front; 1998-2020 Chevrolet Tahoe, front; and additional listed GM front axle applications. Part number GDK321J is also referenced for 1998-1999 Chevrolet K1500 and 1998-1999 GMC K1500 front applications with the 8.25-inch axle.

What It Helps Repair

  • Front differential bearing noise
  • Excessive drivetrain vibration from worn bearings
  • Internal wear found during differential service
  • Loss of smooth front axle operation
  • Repair needs on GM 8.25-inch front axle assemblies

Installation Notes and Tips

Verify axle size and RPO code before ordering, especially on 2019-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 models with RPO SU4. Professional installation is recommended because differential bearing service requires precise setup, inspection, and measurement during reassembly. Confirm all vehicle-specific fitment details against the front axle configuration before beginning the repair.

Quality Assurance

LuK selects OE-quality components for each individual transmission application to support a professional repair outcome. This kit is built for service work where correct bearing fit and application-specific parts selection matter.

This part fits 207 vehicles. Search below:

YearMakeModelPositionNotes
2022ChevroletSilverado 1500Front8.25" AAM RPO Code SU4
2022ChevroletSilverado 1500 LTDFront8.25" AAM RPO Code SU4
2022GMCSierra 1500Front8.25" AAM RPO Code SU4
2022GMCSierra 1500 LimitedFront8.25" AAM RPO Code SU4
2021ChevroletSilverado 1500Front8.25" AAM RPO Code SU4
2021GMCSierra 1500Front8.25" AAM RPO Code SU4
2020CadillacEscaladeFront8.25"
2020CadillacEscalade ESVFront8.25"
2020ChevroletSilverado 1500Front8.25" AAM RPO Code SU4
2020ChevroletTahoeFront8.25"
2020GMCSierra 1500Front8.25" AAM RPO Code SU4
2020GMCYukonFront8.25"
2020GMCYukon XLFront8.25"
2019CadillacEscaladeFront8.25"
2019CadillacEscalade ESVFront8.25"
2019ChevroletSilverado 1500Front8.25" AAM RPO Code SU4
2019ChevroletTahoeFront8.25"
2019GMCSierra 1500Front8.25" AAM RPO Code SU4
2019GMCYukonFront8.25"
2019GMCYukon XLFront8.25"
2018CadillacEscaladeFront8.25"
2018CadillacEscalade ESVFront8.25"
2018ChevroletSilverado 1500Front8.25"
2018ChevroletTahoeFront8.25"
2018GMCSierra 1500Front8.25"
2018GMCYukonFront8.25"
2018GMCYukon XLFront8.25"
2017CadillacEscaladeFront8.25"
2017CadillacEscalade ESVFront8.25"
2017ChevroletSilverado 1500Front8.25"
2017ChevroletTahoeFront8.25"
2017GMCSierra 1500Front8.25"
2017GMCYukonFront8.25"
2017GMCYukon XLFront8.25"
2016CadillacEscaladeFront8.25"
2016CadillacEscalade ESVFront8.25"
2016ChevroletSilverado 1500Front8.25"
2016ChevroletTahoeFront8.25"
2016GMCSierra 1500Front8.25"
2016GMCYukonFront8.25"
2016GMCYukon XLFront8.25"
2015CadillacEscaladeFront8.25"
2015CadillacEscalade ESVFront8.25"
2015ChevroletSilverado 1500Front8.25"
2015ChevroletTahoeFront8.25"
2015GMCSierra 1500Front8.25"
2015GMCYukonFront8.25"
2015GMCYukon XLFront8.25"
2014CadillacEscaladeFront8.25"
2014CadillacEscalade ESVFront8.25"
2014ChevroletSilverado 1500Front8.25"
2014ChevroletSuburban 1500Front8.25"
2014ChevroletTahoeFront8.25"
2014GMCSierra 1500Front8.25"
2014GMCYukonFront8.25"
2014GMCYukon XL 1500Front8.25"
2013CadillacEscaladeFront8.25"
2013CadillacEscalade ESVFront8.25"
2013ChevroletAvalancheFront8.25"
2013ChevroletSilverado 1500Front8.25"
2013ChevroletSuburban 1500Front8.25"
2013ChevroletTahoeFront8.25"
2013GMCSierra 1500Front8.25"
2013GMCYukonFront8.25"
2013GMCYukon XL 1500Front8.25"
2012CadillacEscaladeFront8.25"
2012CadillacEscalade ESVFront8.25"
2012ChevroletAvalancheFront8.25"
2012ChevroletSilverado 1500Front8.25"
2012ChevroletSuburban 1500Front8.25"
2012ChevroletTahoeFront8.25"
2012GMCSierra 1500Front8.25"
2012GMCYukonFront8.25"
2012GMCYukon XL 1500Front8.25"
2011CadillacEscaladeFront8.25"
2011CadillacEscalade ESVFront8.25"
2011ChevroletAvalancheFront8.25"
2011ChevroletSilverado 1500Front8.25"
2011ChevroletSuburban 1500Front8.25"
2011ChevroletTahoeFront8.25"
2011GMCSierra 1500Front8.25"
2011GMCYukonFront8.25"
2011GMCYukon XL 1500Front8.25"
2010CadillacEscaladeFront8.25"
2010CadillacEscalade ESVFront8.25"
2010ChevroletAvalancheFront8.25"
2010ChevroletSilverado 1500Front8.25"
2010ChevroletSuburban 1500Front8.25"
2010ChevroletTahoeFront8.25"
2010GMCSierra 1500Front8.25"
2010GMCYukonFront8.25"
2010GMCYukon XL 1500Front8.25"
2009CadillacEscaladeFront8.25"
2009CadillacEscalade ESVFront8.25"
2009ChevroletAvalancheFront8.25"
2009ChevroletSilverado 1500Front8.25"
2009ChevroletSuburban 1500Front8.25"
2009ChevroletTahoeFront8.25"
2009GMCSierra 1500Front8.25"
2009GMCYukonFront8.25"
2009GMCYukon XL 1500Front8.25"
2008CadillacEscaladeFront8.25"
2008CadillacEscalade ESVFront8.25"
2008ChevroletAvalancheFront8.25"
2008ChevroletSilverado 1500Front8.25"
2008ChevroletSuburban 1500Front8.25"
2008ChevroletTahoeFront8.25"
2008GMCSierra 1500Front8.25"
2008GMCYukonFront8.25"
2008GMCYukon XL 1500Front8.25"
2007CadillacEscaladeFront8.25"
2007CadillacEscalade ESVFront8.25"
2007ChevroletAvalancheFront8.25"
2007ChevroletSilverado 1500Front8.25"
2007ChevroletSuburban 1500Front8.25"
2007ChevroletTahoeFront8.25"
2007GMCSierra 1500Front8.25"
2007GMCYukonFront8.25"
2007GMCYukon XL 1500Front8.25"
2006CadillacEscaladeFront8.25"
2006CadillacEscalade ESVFront8.25"
2006ChevroletAvalanche 1500Front8.25"
2006ChevroletSilverado 1500Front8.25"
2006ChevroletSilverado 1500 HDFront8.25"
2006ChevroletSuburban 1500Front8.25"
2006ChevroletTahoeFront8.25"
2006GMCSierra 1500Front8.25"
2006GMCSierra 1500 HDFront8.25"
2006GMCYukonFront8.25"
2006GMCYukon XL 1500Front8.25"
2005CadillacEscaladeFront8.25"
2005CadillacEscalade ESVFront8.25"
2005ChevroletAvalanche 1500Front8.25"
2005ChevroletSilverado 1500Front8.25"
2005ChevroletSilverado 1500 HDFront8.25"
2005ChevroletSuburban 1500Front8.25"
2005ChevroletTahoeFront8.25"
2005GMCSierra 1500Front8.25"
2005GMCSierra 1500 HDFront8.25"
2005GMCYukonFront8.25"
2005GMCYukon XL 1500Front8.25"
2004CadillacEscaladeFront8.25"
2004CadillacEscalade ESVFront8.25"
2004ChevroletAvalanche 1500Front8.25"
2004ChevroletSilverado 1500Front8.25"
2004ChevroletSuburban 1500Front8.25"
2004ChevroletTahoeFront8.25"
2004GMCSierra 1500Front8.25"
2004GMCYukonFront8.25"
2004GMCYukon XL 1500Front8.25"
2003CadillacEscaladeFront8.25"
2003CadillacEscalade ESVFront8.25"
2003ChevroletAvalanche 1500Front8.25"
2003ChevroletSilverado 1500Front8.25"
2003ChevroletSilverado 1500 HDFront8.25"
2003ChevroletSuburban 1500Front8.25"
2003ChevroletTahoeFront8.25"
2003GMCSierra 1500Front8.25"
2003GMCSierra 1500 HDFront8.25"
2003GMCYukonFront8.25"
2003GMCYukon XL 1500Front8.25"
2002CadillacEscaladeFront8.25"
2002ChevroletAvalanche 1500Front8.25"
2002ChevroletSilverado 1500Front8.25"
2002ChevroletSilverado 1500 HDFront8.25"
2002ChevroletSuburban 1500Front8.25"
2002ChevroletTahoeFront8.25"
2002GMCSierra 1500Front8.25"
2002GMCSierra 1500 HDFront8.25"
2002GMCYukonFront8.25"
2002GMCYukon XL 1500Front8.25"
2001ChevroletSilverado 1500Front8.25"
2001ChevroletSilverado 1500 HDFront8.25"
2001ChevroletSuburban 1500Front8.25"
2001ChevroletTahoeFront8.25"
2001GMCSierra 1500Front8.25"
2001GMCSierra 1500 HDFront8.25"
2001GMCYukonFront8.25"
2001GMCYukon XL 1500Front8.25"
2000CadillacEscaladeFront8.25"
2000ChevroletSilverado 1500Front8.25"
2000ChevroletSuburban 1500Front8.25"
2000ChevroletTahoeFront8.25"
2000GMCSierra 1500Front8.25"
2000GMCYukonFront8.25"
2000GMCYukon XL 1500Front8.25"
1999CadillacEscaladeFront8.25"
1999ChevroletC1500 SuburbanFront8.25"
1999ChevroletK1500Front8.25"
1999ChevroletK1500 SuburbanFront8.25"
1999ChevroletSilverado 1500Front8.25"
1999ChevroletTahoeFront8.25"
1999GMCC1500Front8.25"
1999GMCC1500 SuburbanFront8.25"
1999GMCK1500Front8.25"
1999GMCK1500 SuburbanFront8.25"
1999GMCSierra 1500Front8.25"
1999GMCYukonFront8.25"
1998ChevroletC1500 SuburbanFront8.25"
1998ChevroletK1500Front8.25"
1998ChevroletK1500 SuburbanFront8.25"
1998ChevroletTahoeFront8.25"
1998GMCC1500Front8.25"
1998GMCC1500 SuburbanFront8.25"
1998GMCK1500Front8.25"
1998GMCK1500 SuburbanFront8.25"
1998GMCYukonFront8.25"

* 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:

4620067100DRK321JSDK321J

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

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