1994-2002 Dodge Ram 2500 3500 5.9L Cummins Diesel 5 Row Extruded Tube Aluminum Radiator

1994–2002 Dodge Ram 2500/3500 5.9L Cummins | 5-Row Extruded Tube Aluminum Radiator

Built for the 12-Valve and 24-Valve 5.9L Cummins That Started It All

The ’94–02 Ram was the truck that put the Cummins on the map. Whether you’re running a stock 12-valve P-pump or a built 24-valve pushing serious boost, your cooling system needs to keep up — and the factory plastic-tank radiator wasn’t designed for what these engines can do.

This 5-row extruded aluminum radiator is engineered specifically for the 1994–2002 Ram 2500 and 3500. It drops directly into the factory mounting locations with no cutting, no drilling, and no fabrication required.

Done replacing radiators? So are we.

If you’ve already been through a factory unit and one or two aftermarket replacements, you already know the pattern — brazed cores and crimped tanks that look good in photos but can’t hold up to the real-world thermal cycling and vibration a diesel truck produces day in and day out. Most of the competition, including well-known brands, TIG weld only the end tanks and rely on brazed joints where the core meets the header. That junction is exactly where they crack and leak. It’s not a matter of if — it’s when.

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 result is a radiator that is genuinely heavy duty, built to last, and engineered to be the last one you ever put in this truck.

Five rows of heat rejection capacity, engineered for this platform.

The 5-row design gives you significantly more cooling capacity than the factory radiator or most 2–3 row aftermarket units — critical if you’re towing heavy, running a tuner, or dealing with a hot climate. The fin pitch is optimized for the Ram’s factory shroud setup so you get the full benefit without chasing fan spacing issues. Each unit ships with a billet aluminum radiator cap and arrives in custom heavy-duty packaging with high-density foam, protected in transit and ready to install when it shows up.

Fitment: 1994–2002 Dodge Ram 2500 / Ram 3500 | 5.9L Cummins (12-valve and 24-valve) | Crossflow | 36.5″ core