Timken DRK320A Axle Differential Bearing and Seal Kit - Front or Rear

Timken DRK320A Axle Differential Bearing Kit

Timken DRK320A is an axle differential bearing and seal kit for front and rear driveline service applications. It is built for specific GM, Buick, GMC, Oldsmobile, Isuzu, and Pontiac vehicles that use the listed differential configurations, including several manual-transmission front axle applications with a 7.25" ring gear.

Key Features

• Axle differential bearing and seal kit for driveline service
• Timken DT Components rebuild kit for differential, transfer case, and transmission service
• Contains the bearings and seals needed to complete the job
• Standard kit version for the listed applications
• Cross-references DK320A and RA320A for the same application

Application Details

Fits 2004-2007 Buick Rainier, front; 1990-2005 Chevrolet Astro, front; 2002-2005 Chevrolet Blazer, front; 2005 Chevrolet Express 2500, front; 2002-2005 Chevrolet Trailblazer, front; 2002-2005 GMC Envoy, front; 1990-2005 GMC Safari, front; 2005 GMC Savana 2500, front; 1983-2004 Chevrolet S10, front; 1991-2004 GMC Sonoma, front; 1996-2004 Oldsmobile Bravada, front; 1991-1994 Oldsmobile Bravada, front; 1998-2000 Isuzu Hombre, front; 1998, 1996, and 1992 GMC Jimmy, front; 1983-1994 Chevrolet S10 Blazer, front; 1983-1991 GMC S15 Jimmy, front; 1983-1990 GMC S15, front; and 1988-1990 Pontiac 6000, rear.

What This Kit Helps Repair

• Front differential bearing wear in Chevrolet S10, GMC Sonoma, and GMC S15 applications
• Seal leakage at the differential pinion area on manual-transmission front axle setups
• Noise or rough operation from worn axle differential bearings
• Service needs on Buick Rainier, Chevrolet Trailblazer, and GMC Envoy front driveline assemblies
• Rebuild work on compatible Isuzu Hombre and Pontiac 6000 differential applications

Installation Notes

Verify axle position, ring gear size, and transmission type before ordering. Several listed Chevrolet Blazer, Chevrolet Express 2500, GMC Savana 2500, Chevrolet S10, GMC Sonoma, and Oldsmobile Bravada applications note manual transmission use with a 7.25" ring gear and include a differential pinion seal. Confirm the vehicle’s differential configuration against the original parts before installation.

Quality Assurance

Timken markets these rebuild kits through its DT Components line for differential, transfer case, and transmission service. DRK320A is a Timken service kit engineered for the listed applications and supported by Timken’s established driveline parts catalog.