Thermostats

BD Diesel Xtrude Trans Cooler Temperature Adapter (1300620/1300621) - 10 JICM x 1/2 Barb

BD Diesel Xtrude Trans Cooler Temperature Sensor w/ Black Leads (180 On / 160 Off)

Debris in the stock cooler bypass valve can cause it to jam the internal valve keeping it in recirculation mode. When this happens the transmission temperature will rise and can lead to overheating...