OE Quality
60-Day Returns

Dorman 946-903 Drive Shaft - Rear
Durable Drive Shaft for Ford F-350 Super Duty
The Dorman 946-903 drive shaft is engineered to provide reliable driveline performance for your Ford F-350 Super Duty. Constructed from steel with adjustable length and greaseable features, this drive shaft is designed to meet the demands of heavy-duty applications.
- Made from durable steel shaft material for strength and longevity
- Includes a slip yoke for smooth driveline operation
- Greaseable design allows for easier maintenance and extended service life
- Adjustable overall length to ensure proper fit and alignment
- 52.1 inches in length with a 3.5-inch shaft diameter and 0.083-inch wall thickness
- Does not include CV joints or axle nut
- Package contains one drive shaft
Product Details and Specifications
The Dorman 946-903 drive shaft is specifically designed for the Ford F-350 Super Duty, providing a direct replacement for the original equipment part. Its steel construction offers the necessary strength to handle the torque and load requirements of heavy-duty trucks. The 3.5-inch diameter shaft with a 0.083-inch wall thickness balances durability with weight considerations. The slip yoke included in this assembly helps accommodate driveline movement and reduces stress on connected components. Additionally, the greaseable feature allows for routine lubrication, which can help prevent premature wear and extend the life of the drive shaft. The overall length is adjustable, ensuring a precise fit during installation.
Common Applications and Problem Solving
- Replacement for worn or damaged drive shafts on Ford F-350 Super Duty trucks
- Addresses driveline vibrations caused by bent or imbalanced shafts
- Solves issues related to excessive wear from lack of lubrication
- Restores proper driveline length and alignment for smooth operation
- Helps eliminate noise and drivetrain binding due to faulty slip yokes
Installation Notes and Tips
When installing the Dorman 946-903 drive shaft, ensure the vehicle is securely supported and the driveline components are clean and free of debris. The adjustable length feature allows for fine-tuning to achieve proper alignment and prevent driveline vibrations. Since this drive shaft does not include CV joints or axle nuts, reuse existing hardware or source separately as needed. Regular greasing of the drive shaft is recommended to maintain optimal performance and reduce wear.
Quality Assurance and Warranty
Dorman manufactures this drive shaft to meet or exceed OEM specifications for the Ford F-350 Super Duty. The steel construction and greaseable design contribute to its durability under demanding conditions. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship. Refer to Dorman's official warranty policy for complete information.
| Brand | Dorman |
| Part Number | 946-903 |
| Shaft Material | Steel |
| CV Joints Included | No |
| Grade Type | Regular |
| Shaft Diameter | 3.5 |
| Slip Yoke | Yes |
| Axle Nut Included | No |
| Drive Shaft Length (In) | 52.1 in |
| Drive Shaft Wall Thickness (In) | 0.083 in |
| Greaseable Drive Shaft | Yes |
| Overall Length Adjustable | Yes |
| Package Contents | 1 driveshaft |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Body Type | Drive Type | Transmission | Liters | Cylinders | Fuel Type | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002 | Ford | F-350 Super Duty | Cab & Chassis | 4WD | Automatic | 7.3L | V8 | DIESEL | 141.0" | Rear | w/Dual Rear Wheels (DRW); Regular Chassis Cab; To 1/06/02 |
| 2001 | Ford | F-350 Super Duty | Cab & Chassis | 4WD | Automatic | 7.3L | V8 | DIESEL | 141.0" | Rear | w/Dual Rear Wheels (DRW); Regular Chassis Cab |
| 2000 | Ford | F-350 Super Duty | Cab & Chassis | 4WD | Automatic | 7.3L | V8 | DIESEL | 141.0" | Rear | w/Dual Rear Wheels (DRW); Regular Chassis Cab |
| 1999 | Ford | F-350 Super Duty | Cab & Chassis | 4WD | Automatic | 7.3L | V8 | DIESEL | 141.0" | Rear | w/Dual Rear Wheels (DRW); Regular Chassis Cab |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.