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Timken DRK321CMK Axle Differential Bearing and Seal Kit - RearOE Quality 60-Day Returns
Part #: DRK321CMK

Timken DRK321CMK Axle Differential Bearing and Seal Kit - Rear

Rear
124 vehicles fit this part
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Fitment: Buick, Chevrolet, GMC, Isuzu, and Saab, 9-7x, Ascender, Avalanche, Avalanche 1500, Axiom, Blazer, Express 1500, Hombre, Rainier, Rodeo, Rodeo Sport, Savana 1500, Sierra 1500, Sierra 1500 HD, Silverado 1500, Silverado 1500 HD, Suburban 1500, Tahoe, Yukon, and Yukon XL 1500
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Not what you need? See all Axle Differential Bearing and Seal Kit options

Timken DRK321CMK Differential Bearing Kit

Timken DRK321CMK is an axle differential bearing and seal master kit for rear applications that need a complete rebuild-focused service solution. It is built for vehicles using an 8.5 in. or 8.6 in. ring gear with a 3.42 drive ratio, including many Chevrolet Silverado 1500 and GMC Sierra 1500 rear differential service jobs.

  • Axle differential bearing and seal master kit for rear differential service
  • For 8.5 in. and 8.6 in. ring gear applications with 3.42 drive ratio
  • Timken DT Components rebuild kit format for bearing and seal replacement
  • Master kit designation indicated by the MK suffix
  • Cross-reference: SDK321CMK

Vehicle Fitment

  • Fits 2007-2008 Chevrolet Avalanche, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 1999-2008 Chevrolet Express 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2008 Chevrolet Silverado 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2008 Chevrolet Suburban 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2008 Chevrolet Tahoe, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 1999-2008 GMC Savana 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2008 GMC Sierra 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2008 GMC Yukon, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2008 GMC Yukon XL 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2003-2008 Isuzu Ascender, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2004-2007 Buick Rainier, rear, 8.6 in. ring gear; Master Kit
  • Fits 2005-2007 Saab 9-7x, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2002-2006 Chevrolet Avalanche 1500, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2005-2006 Chevrolet Silverado 1500 HD, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2001-2003 Chevrolet Silverado 1500 HD, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2005-2006 GMC Sierra 1500 HD, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2001-2003 GMC Sierra 1500 HD, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2000-2005 Chevrolet Blazer, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2002-2004 Isuzu Axiom, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 1999-2004 Isuzu Rodeo, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 2001-2003 Isuzu Rodeo Sport, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit
  • Fits 1999-2000 Isuzu Hombre, rear, 8.5 in., 8.6 in. ring gear, drive ratio 3.42; Master Kit

What It Helps Repair

  • Rear differential bearing noise during acceleration or deceleration
  • Gear oil seepage from worn differential seals
  • Excessive play or roughness in the axle differential assembly
  • Service needs during differential rebuilds on Chevrolet, GMC, Buick, Saab, and Isuzu rear axles
  • Restoration work on 8.5 in. and 8.6 in. ring gear assemblies with a 3.42 ratio

Installation Notes

Confirm the rear axle ring gear size and drive ratio before ordering. This Timken DRK321CMK kit is listed for rear applications only, so match the vehicle’s differential configuration to the fitment notes before disassembly. For Chevrolet Silverado 1500, GMC Sierra 1500, and related SUV applications, verify the axle tag or build data to ensure the 8.5 in. or 8.6 in. ring gear and 3.42 ratio specification.

Quality Assurance

Timken markets these differential service kits through the DT Components line, which packages the bearings and seals needed for differential, transfer case, and transmission rebuild work. The MK suffix identifies this as a master kit version.

This part fits 124 vehicles. Search below:

YearMakeModelPositionNotes
2008ChevroletAvalancheRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2008IsuzuAscenderRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007BuickRainierRear8.6 in. Ring Gear; Master Kit
2007ChevroletAvalancheRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007IsuzuAscenderRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2007Saab9-7xRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006BuickRainierRear8.6 in. Ring Gear; Master Kit
2006ChevroletAvalanche 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006ChevroletSilverado 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006GMCSierra 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006IsuzuAscenderRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2006Saab9-7xRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005BuickRainierRear8.6 in. Ring Gear; Master Kit
2005ChevroletAvalanche 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005ChevroletBlazerRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005ChevroletSilverado 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005GMCSierra 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005IsuzuAscenderRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2005Saab9-7xRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004BuickRainierRear8.6 in. Ring Gear; Master Kit
2004ChevroletAvalanche 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004ChevroletBlazerRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004IsuzuAscenderRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004IsuzuAxiomRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2004IsuzuRodeoRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletAvalanche 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletBlazerRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletSilverado 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003GMCSierra 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003IsuzuAscenderRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003IsuzuAxiomRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003IsuzuRodeoRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2003IsuzuRodeo SportRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletAvalanche 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletBlazerRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletSilverado 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002GMCSierra 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002IsuzuAxiomRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002IsuzuRodeoRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2002IsuzuRodeo SportRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001ChevroletBlazerRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001ChevroletSilverado 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001GMCSierra 1500 HDRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001IsuzuRodeoRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2001IsuzuRodeo SportRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000ChevroletBlazerRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000ChevroletSilverado 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000ChevroletSuburban 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000ChevroletTahoeRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000GMCSierra 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000GMCYukonRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000GMCYukon XL 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000IsuzuHombreRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
2000IsuzuRodeoRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
1999ChevroletExpress 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
1999GMCSavana 1500Rear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
1999IsuzuHombreRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit
1999IsuzuRodeoRear8.5 in., 8.6 in. Ring Gear ,Drive Ratio 3.42; Master Kit

* 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:

SDK321CMK

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

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