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The 2003–2009 Ram 2500 and 3500 span one of the most popular generations in diesel truck history. This range covers the high-output 5.9L ISB, the final 600-lb-ft 5.9 in 2007, and the first two years of the 6.7L Cummins — all engines that make serious torque and put equally serious thermal demands on the cooling system. This 3-row extruded aluminum radiator is engineered specifically for the 2003–2009 Ram 2500 and 3500 with the 5.9L or 6.7L Cummins. It drops directly into the factory mounting locations with no cutting, no drilling, and no fabrication required.
Fluidyne eliminates that failure point entirely with a fully extruded aluminum core — a single-piece design with no brazed tube-to-header joints anywhere in the core. Every tank, fitting, and seam is finished with premium TIG welds throughout.
The extruded 3-row core delivers more effective heat rejection than conventional 3 or even 4-row brazed-tube designs, because every tube is formed from solid aluminum rather than folded and joined sheet. With a 27″ core height — significantly taller than earlier Cummins applications — this unit has the surface area to keep temps stable under sustained towing, mountain grades, or high-boost builds. Includes a billet aluminum radiator cap.
2003–2009 Dodge Ram 2500 / Ram 3500 | 5.9L Cummins & 6.7L Cummins | Crossflow | 27″ core
