Dorman 946-066 Drive Shaft - Rear

Overview of Dorman 946-066 Drive Shaft for Chevrolet and GMC

The Dorman 946-066 drive shaft is engineered for reliable driveline performance in heavy-duty trucks. Designed specifically for Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD models, this aluminum drive shaft offers a precise fit and durable construction to maintain drivetrain efficiency.

• Constructed from lightweight aluminum for strength and corrosion resistance
• Regular grade type ensuring dependable performance under standard operating conditions
• Shaft diameter of 5.73 inches for optimal torque transfer
• Overall length of 88.26 inches tailored for rear driveshaft applications
• Wall thickness of 0.083 inches balancing durability and weight
• Non-greaseable design reducing maintenance requirements
• Includes one rear driveshaft per package

Detailed Product Description

The Dorman 946-066 drive shaft is manufactured with an aluminum shaft material that provides a balance of strength and reduced weight, which is critical for maintaining driveline efficiency in heavy-duty trucks like the Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD. The 5.73-inch shaft diameter and 0.083-inch wall thickness are engineered to handle the torque demands of these vehicles without compromising durability. This drive shaft measures 88.26 inches in length, designed specifically as a rear driveshaft replacement, ensuring proper fitment and alignment. The regular grade type indicates it meets standard performance requirements for driveline components. Additionally, this drive shaft is not greaseable and does not feature overall length adjustability, which simplifies installation and maintenance.

Compatible Vehicles and Applications

This drive shaft is compatible with the following models:

• Chevrolet Silverado 2500 HD (rear driveshaft)
• GMC Sierra 2500 HD (rear driveshaft)

It is intended for use as a direct replacement part to restore driveline function and address common issues related to worn or damaged drive shafts.

Common Issues Addressed by Dorman 946-066 Drive Shaft

• Vibration or shuddering during acceleration or cruising
• Clunking noises from the driveline under load
• Worn or damaged shaft causing driveline imbalance
• Corrosion or material fatigue in original drive shaft
• Failure of the rear driveshaft affecting vehicle drivability

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before removal
• Verify the part number 946-066 matches the original drive shaft specifications
• Check for proper alignment and torque specifications during installation
• Since this drive shaft is non-greaseable, no additional lubrication is required
• Inspect related driveline components such as U-joints for wear during replacement

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 946-066 drive shaft undergoes rigorous quality control to ensure durability and performance in demanding conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship to provide confidence in the product's reliability.