If your Ram 2500 or 3500 5.9L Cummins is still relying on a weak factory-style radiator, this Fluidyne Extruded Aluminum Diesel Radiator is built to be a serious upgrade. Designed for diesel trucks that tow, work, and run hard, it helps provide stronger cooling performance and long-term durability where standard aftermarket radiators often fall short.
Fluidyne uses a NASCAR-proven extruded aluminum core design that is formed from a single piece of aluminum, helping eliminate the common header joint failure point found in many traditional radiators. With a 5-row crossflow design, thick aluminum construction, and a proprietary fin layout, this radiator is made to reject heat efficiently and stand up to demanding diesel use.
Built for Dodge Ram 2500 and 3500 trucks with the 5.9L Cummins, this radiator features a natural aluminum finish, upper driver-side inlet, lower passenger-side outlet, and includes a radiator cap. Whether you are towing, daily driving, or building a stronger cooling system, this Fluidyne radiator delivers race-proven construction in a direct diesel truck application.