Dorman 630-144A Drive Axle Shaft - Rear Left or Rear Right

Overview

This Dorman drive axle shaft, part number 630-144A, directly replaces the original equipment axle on select GM compact trucks and SUVs with the ZR2 high wider package. It is built for rear left and rear right applications where the axle shaft has worn or been damaged.

Use this axle shaft for Chevrolet Blazer, GMC Jimmy, Chevrolet S10, and GMC Sonoma fitments listed below. The 630-144A is a solid axle shaft made from carbon steel with a galvanized finish for corrosion resistance.

Key Features

• Direct replacement axle shaft for select GM applications
• Solid shaft axle construction
• Carbon steel material with galvanized finish
• 30-spline inboard design
• 5-lug wheel pattern with 5 x 4.75 in bolt circle
• Application-specific installation components included

Detailed Description

The Dorman 630-144A drive axle shaft is engineered to replace the original axle shaft on specific Chevrolet and GMC models equipped with the ZR2 high wider package. Fitment includes Chevrolet Blazer, GMC Jimmy, Chevrolet S10, and GMC Sonoma rear axle positions, with the exact side and year determined by the vehicle listing. This axle shaft uses a 30-spline inboard configuration, a 5 x 4.75 in wheel bolt pattern, and a solid shaft design for the listed applications.

Part number 630-144A is a practical replacement when the axle shaft is damaged or when bearing wear has affected driveline operation. The galvanized carbon steel construction adds corrosion resistance, while the OE-style replacement format supports a straightforward service job on compatible GM driveline assemblies. If you are sourcing a Chevrolet Blazer axle shaft or a GMC Jimmy axle shaft for the ZR2 package, verify the exact fitment row before ordering.

This part cross-references no listed interchange numbers for the same application.

What It Is Used For

• Replacing a damaged rear axle shaft
• Addressing axle wear related to bearing failure
• Restoring driveline function in ZR2-equipped GM vehicles
• Correcting fitment issues tied to the listed axle configuration
• Servicing Chevrolet Blazer, GMC Jimmy, Chevrolet S10, and GMC Sonoma rear axle assemblies

Installation Notes

Confirm the exact year, model, side, and ZR2 package before installation. This axle shaft is listed for rear left and rear right positions depending on the vehicle application. Review the vehicle-specific notes for each fitment row, especially the RPO code requirement, before beginning service.

The product description states that application-specific installation components are included. No axle nut, wheel studs, retainer, CV joints, or ABS tone ring are included.

Quality Assurance

Dorman identifies this axle shaft as a direct replacement for the original equipment on the listed vehicles. The part number 630-144A is built to match the application requirements for the specified GM driveline configurations.