RatioTek Valve Body Upgrade Kit
Fits 2011-2019 Duramax with Allison 1000 Transmission
This kit is the perfect upgrade for any Duramax owner looking to increase to the 400-800 HP range.
- Improved Pressure Regulator Valve Function
- Improved Torque Converter Clutch Function
- Increased Torque and Horsepower Capability
This kit also includes a Higher Calibration E Shift Spring (Part# RT-A-ES). Sticking E shift valves can cause codes P1711 or P0872.