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 and premature transmission failure. The BD Cooler Bypass Delete keeps the transmission cooler operational all the time and eliminates this failure prone item.. 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 and premature transmission failure. The BD Cooler Bypass keeps the transmission cooler operational all the time and eliminates this failure prone item.. Cooler Bypass Delete Dodge RAM 2500/3500/4500/5500 68RFE/AS69RC 2013-2018 & 66RFE/AS66RC 2014-2018. Cooler Bypass Delete Dodge RAM 66RFE/68RFE/66RC/69RC 2500/3500/4500/5500 2013-18. BD Diesel 13-18 Dodge 6.7L 68RFE/Aisin AS69RC Thermostat Bypass. Automatic Transmission Oil Cooler Bypass Tube Eliminator. Ensures 100% Fluid Flow Through The Transmission Cooler. Keeps Your Transmission Temperature As Low As Possible. Transmission Oil Cooler Bypass Tube Eliminator Kit;. Transmission Oil Cooler Bypass Tube Eliminator Kit. Fits 66RFE / 68RFE / AS66RD / AS69RC Transmission. Fits 68RFE And Aisin AS69RC Transmission. Eliminates Factory Bypass Valve. COOLER BYPASS RAM 2013-2018. A/TBpsTubeElim. COOLER BYPASS

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