The 3rd Gen Dodge transmission coolers are notorious for having the transmission cooler thermostat stick in the "bypassed" position, causing high operating temperatures. Our thermostat delete kit is a simple drop-in kit that completely seals off the bypass tube.

-Simple install

-Lowers overall operating temperature by up to 30 degrees

-Now with improved double o-ring end plug

-NOTE: This product is designed to work with OEM coolers on 3rd Gen trucks with 5.9 Cummins and 48RE transmissions only. If you have a Dorman cooler, this product will not fit.

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