Get the Direct-Fit Transmission Coolers & Lines that will upgrade and fix the transmission cooling in your 1994-1998 Dodge 5.9L 12V Cummins. Get OEM replacement cooler lines or performance braided hoses with billet -AN fittings for your vehicle. Get increased cooling efficiency with an aftermarket transmission cooler that has a greater fluid capacity and core volume. Performance transmission cooler thermal bypass valves are available for some applications that will replace the problematic factory thermal bypass valve. There are many high-quality manufacturers accessible, including Dorman, BD-Power, Mishimoto, and others.