XDP has a large assortment of stock replacement and upgraded parts for the Transmission in your 2011-2016 GM 2500HD/3500HD. Upgraded Flex Plates will handle more power and enable better power transfer from the Torque Converter. Hardened input, output, and intermediate Automatic Transmission Shafts are a massive upgrade for your stock transmission. Enhance the shifting of your transmission with a Valve Body from Revmax, BD-Power, or ATS. DPC, Sun Coast Converters, and ATS offer Torque Converters that will handle competition-level horsepower and torque. Automatic Transmission Pans from XDP, Mag-Hytec, and PPE will help extend the transmission fluid life by keeping it cool.
A manual style transmission is typical in older diesel trucks, requiring the driver to make all of the gear selections on their own. Find the parts you need to keep your transmission on the road with the products available at XDP. Find the best Transmission Fluid brands for your Automatic or Manual Transmission, including Royal Purple, Lucas Oil, and Champion. Manual Transmission Clutches from Valair or South Bend Clutch come with single, dual, and triple clutch plates to handle any power level. Replace the worn-out Manual Transmission Hydraulics to improve clutch engagement and disengagement. Upgrade the input shaft of your trans with the Manual Transmission Shafts available at XDP.