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Dorman 630-138A Drive Axle Shaft - Rear Left or Rear Right
| Brand | Dorman 630-138A |
|---|---|
| Position | Rear Right and Rear Left |
| Wheel Bolt Pattern Size | 5 x 4.75 |
| Wheel Bolt Pattern Size | 5 x 4.75 in |
| Wheel Bolt Pattern Size | 5 x 4.75 in. |
| Wheel Studs Included | No |
| Wheel Studs Included | Non |
| Retainer Included | No |
| Retainer Included | Non |
| Inboard Spline Quantity | 30 |
| Outboard Spline Quantity | 0 |
| CV Joints Included | No |
| CV Joints Included | Non |
| Axle Nut Included | No |
| Axle Nut Included | Non |
| ABS Tone Ring Included | No |
| ABS Tone Ring Included | Non |
| Differential Case Design Type | 12 tornillos de gm |
| Differential Case Design Type | Gm 12 bolt |
| ABS Tone Ring Installed | No |
| ABS Tone Ring Installed | Non |
| Anillo del tono del ABS instalado | No |
| Axle Type | Eje axial sólido |
| Axle Type | Solid shaft axle |
| Contenidos del paquete | Eje axial |
| Diameter | 34.2 mm |
| Finish | Galvanizado |
| Finish | Galvanized |
| Hole Quantity | 10 |
| Length (In) | 30.07 in |
| Length (In) | 30.07 in. |
| Longitud (in) | 30.07 in. |
| Fits | Chevrolet and Pontiac · 15 vehicles |
Direct replacement. Matches original equipment requirements for select driveline applications.
Galvanized finish. Adds corrosion resistance for demanding axle service.
Carbon steel construction. Provides strength for rear axle driveline use.
Cross-references 3969285 for the same application. See all 1.
Direct Replacement Axle Shaft
This Dorman drive axle shaft, part number 630-138A, directly replaces the original equipment on select GM applications. It is built for solid axle service and matches the application-specific requirements of the vehicle it was engineered for.
Key Features
- Direct replacement axle shaft for select rear axle applications
- Galvanized finish for added corrosion resistance
- Carbon steel construction for strength in driveline service
- 30-spline design with 5 x 4.75 wheel bolt pattern
- Application-specific installation components included in the design
Detailed Fitment and Design
Part number 630-138A is a solid shaft axle with a 30.07-inch length, 34.2 mm diameter, and GM 12-bolt differential case design. It is configured without CV joints, axle nut, wheel studs, retainer clips, or an ABS tone ring, and it uses a 10-hole layout with a 10-lug wheel pattern. This axle shaft is a fit for select Chevrolet Chevelle, Chevrolet El Camino, Chevrolet Monte Carlo, Chevrolet Camaro, and Pontiac Firebird rear axle applications, including 1968-1972 Chevrolet Chevelle, 1968-1972 Chevrolet El Camino, 1970-1972 Chevrolet Monte Carlo, 1970 Chevrolet Camaro, and 1970 Pontiac Firebird. It also cross-references Monroe Shocks & Struts 3969285 for the same application.
Common Replacement Uses
- Damaged axle shaft replacement after wear or breakage
- Repair for worn bearings affecting axle operation
- Restoration of rear driveline function on GM 12-bolt applications
- Replacement for corrosion-related shaft deterioration
Installation Notes and Tips
Verify the axle position, differential case design, spline count, bolt pattern, and overall length before installation. Confirm the vehicle uses the specified GM 12-bolt rear axle configuration and round-cover or 12-bolt-cover application noted in the fitment data. Compare the original shaft dimensions and mounting details to ensure proper alignment and operation.
Quality Assurance
Dorman manufactures replacement driveline components to match original equipment requirements for specific applications. Part number 630-138A is built as a direct replacement for the listed vehicles and configurations.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1972 | Chevrolet | Chevelle | Rear Right | w/Round Cover |
| 1972 | Chevrolet | El Camino | Rear Right | w/Round Cover |
| 1972 | Chevrolet | Monte Carlo | Rear Right | w/Round Cover |
| 1971 | Chevrolet | Chevelle | Rear Right | w/Round Cover |
| 1971 | Chevrolet | El Camino | Rear Right | w/Round Cover |
| 1971 | Chevrolet | Monte Carlo | Rear Right | w/Round Cover |
| 1970 | Chevrolet | Camaro | Rear Right | w/12 Bolt Cover |
| 1970 | Chevrolet | Chevelle | Rear Right | w/Round Cover |
| 1970 | Chevrolet | El Camino | Rear Left | w/Round Cover |
| 1970 | Chevrolet | Monte Carlo | Rear Left | w/Round Cover |
| 1970 | Pontiac | Firebird | Rear Right | w/12 Bolt Cover |
| 1969 | Chevrolet | Chevelle | Rear Left | w/Round Cover |
| 1969 | Chevrolet | El Camino | Rear Left | w/Round Cover |
| 1968 | Chevrolet | Chevelle | Rear Right | w/Round Cover |
| 1968 | Chevrolet | El Camino | Rear Right | w/Round Cover |
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