NP261HD OEM Quality Replacement Transfer Case (Manual Shift / Lever On The Floor!) Remanufactured By Transfer Case World in the USA!! 18 Month Unlimited Mileage Replacement Warranty! Fits 2500HD/3500HD 6.0L Trucks With 4L80E Transmission. This unit manually Shifts. Check Fitment Guide BEFORE ORDERING! (Verify You're Ordering The Correct Unit) This NP261HD rebuilt transfer case is a high-quality OEM replacement unit designed for 2001–2007 GM and Chevy 2500/3500 series trucks equipped with the 6.0L Vortec engine and 4L80E automatic transmission. It shifts manually with a lever on the floor and is Identified by RPO code NP2. At Transfer Case World, every NP261HD is remanufactured in-house by expert builders using upgraded internal components for long-term durability. Common factory issues like pump rub have been addressed with our enhanced rear case design, extending the life of your transfer case even under tough conditions. This is not a recycled or offshore product. It’s built, tested, and backed by a U.S.-based team that knows these units inside and out. Whether you're restoring a work truck or maintaining fleet reliability, this transfer case is built to perform.