National RA-324-B Axle Differential Bearing and Seal Kit - Rear

Axle Differential Bearing and Seal Kit for Rear Service

The National RA-324-B axle differential bearing and seal kit provides the components needed to complete a rear differential repair on a wide range of GM trucks and SUVs. It is a fitment-based solution for 9.5-inch ring gear AAM axle applications, including Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade models.

This part cross-references Timken DRK324B for the same application.

Key Features

• National bearing and seal kit for rear axle differential service
• Built for 9.5-inch ring gear AAM axle applications
• Supports rear differential pinion seal repair on listed vehicles
• Direct fit coverage for many Chevrolet, GMC, Cadillac, and Hummer models
• Part number RA-324-B for catalog and service matching

Detailed Description

National RA-324-B is a rear axle differential bearing and seal kit for vehicles equipped with a 9.5-inch ring gear AAM axle. The kit is listed for applications such as the Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon, along with additional GM trucks, vans, and SUVs from 1997 through 2018. It is also referenced under DK324-B, DK324B, and Timken DRK324B.

Use RA-324-B when servicing rear differential bearing and pinion seal wear on compatible GM driveline applications. The National RA-324-B helps restore sealing and bearing function in the rear axle assembly.

What It Helps Address

• Rear differential fluid leaks at the pinion seal
• Noise from worn differential bearings
• Service needs during axle teardown and rebuild
• Wear-related driveline maintenance on 9.5-inch AAM rear axles
• Repair work on Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade rear axles

Installation Notes and Tips

Verify the axle type, ring gear size, and rear position before ordering. This kit is listed for rear applications only and is tied to 9.5-inch ring gear AAM axle differential pinion seal service. Compare the original part number and vehicle build details against the fitment list for the exact year and model.

Quality Assurance

National supplies this bearing and seal kit as a repair-focused driveline service part, with components selected to complete the listed differential service application.