The Mishimoto thermal bypass valve kit for 2013–2018 Dodge Ram 6.7L Cummins replaces the stock in-line bypass to improve transmission cooling control. CNC-machined from aluminum, it uses a serviceable thermostat that opens about 10°F earlier and includes an optional bypass for full-flow cooling in hot climates. Improved internal flow and machined fins aid heat dissipation for more reliable transmission temperatures.
Mishimoto 2013+ Dodge Ram 6.7L Cummins Thermal Bypass Valve Kit