2013-2018 Dodge Ram 2500 3500 6.7L Cummins Diesel 4 Row Extruded Tube Aluminum Radiator

2013–2018 Dodge/Ram 2500/3500 6.7L Cummins | 4-Row Extruded Tube Aluminum Radiator

The 6.7 Cummins Got Better Every Year. Your Cooling System Should Too.

The 2013–2018 Ram 2500 and 3500 represent some of the most refined Cummins trucks ever built — with torque ratings that climbed as high as 900 lb-ft by the end of this generation. Whether you’re running a stock engine pulling a fifth wheel or a tuned build making serious power, the factory plastic-tank radiator was never designed with real headroom for the thermal load this engine can produce. Most aftermarket aluminum radiators offer the same fundamental weakness: a brazed core-to-header joint that fails under diesel vibration and heat cycling. Change them out often enough and it starts to feel like a subscription.

This 4-row extruded aluminum radiator is engineered specifically for the 2013–2018 Ram 2500 and 3500 with the 6.7L Cummins. It drops directly into the factory mounting locations with no cutting, no drilling, and no fabrication required.

Done replacing radiators? So are we.

Most aftermarket aluminum radiators — 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.

Four rows of heat rejection, matched to the fourth-gen platform.

The 4-row extruded core delivers more effective heat rejection than conventional 4 or even 5-row brazed-tube designs, because every tube is formed from solid aluminum rather than folded and joined sheet. The fin pitch is optimized for the Ram’s factory shroud and fan configuration.

Fitment: 2013–2018 Dodge/Ram 2500 / Ram 3500 | 6.7L Cummins | Crossflow | 26.75″ core