DORMAN 946-074 REAR DRIVESHAFT ASSEMBLY (ALLISON TRANSMISSION) (78" BED/143.5" WHEELBASE) 2001-2007 GM SILVERADO/SIERRA 2500HD RWD EXTENDED CAB

The Dorman 946-074 Rear Driveshaft Assembly is engineered to meet the demands of 2001-2007 GM Silverado/Sierra 2500HD vehicles equipped with Allison transmissions. Specifically designed for models with a 78" bed and a 143.5" wheelbase, this driveshaft delivers reliability and performance that meets or exceeds OEM standards.

Constructed entirely from new components, this driveshaft eliminates the hassle of core charges, offering an effortless installation experience. The assembly arrives pre-balanced, ensuring a smooth operation right out of the box, making it a perfect choice for both seasoned mechanics and DIY enthusiasts. With dimensions tailored to original equipment specifications, this driveshaft assures a dependable fit and performance, providing peace of mind during installation.

Durability is at the forefront of the Dorman 946-074. Featuring non-staked universal joints, it is designed for future serviceability, allowing for easier maintenance down the line. The robust steel construction is complemented by a shaft diameter of 3.5 inches and a wall thickness of 0.065 inches, making it a stout addition to your vehicle’s drivetrain.

With an overall length adjustable to 79.7 inches, this driveshaft is equipped to handle regular greaseable applications. Each package contains one complete driveshaft, neatly boxed for convenience. This part directly replaces original equipment numbers including 15024418 and 25776621 from General Motors, reinforcing its compatibility and reliability.

Upgrade your vehicle's performance with the Dorman 946-074 Rear Driveshaft Assembly—engineered for excellence and designed to last. Whether for routine maintenance or a full rebuild, this driveshaft is the ideal choice for anyone looking to restore their Silverado or Sierra to peak operation.