Manual Shift Transfer Case

The Zumbrota Drivetrain RTC1226G-2 is a remanufactured MP1226 manual shift transfer case, meticulously rebuilt to high standards for reliability and confidence. This unit is specifically designed for 2011-2019 GM Sierra and Silverado 2500 and 3500 trucks equipped with the 6.0L gas engine and the 6L90 transmission, identified by option code NQG. Zumbrota Drivetrain emphasizes quality in their rebuilding process. Each case and its internal components undergo thorough inspection for wear, including cracks, stripped threads, shaft straightness, gear wear, and chain stretch. They utilize an exclusive Hydro-blast rinse and blasting procedure, followed by a proprietary deep cleaning process. All units are rebuilt with new bearings, seals, and viscous couplers, then spun-tested to ensure proper shiftability and quiet operation. The transfer case features a 29-spline input shaft, a manual shift operation type, and an oval mounting pattern with a slip yoke rear output. This transfer case requires 1.6 liters of Dexron VI ATF fluid, which is not included. It is shipped in a high-density plastic tote to prevent transit damage. Key specifications include a 29-spline input shaft, Hollander No. 412-759, manual shift operation, NQG option code, and an oval mounting pattern. The rear output type is a slip yoke. The transfer case fluid capacity is 1.6 liters, and it requires Dexron VI ATF fluid.