Ram Engine Cooling

Heavy-Duty Engine Cooling for Ram 5.9L & 6.7L Cummins

The factory rubber coolant hoses on your Dodge Ram dry rot, expand, and eventually fail over time, especially when your 5.9L or 6.7L Cummins is put to work. A performance Ram Cummins coolant hose kit solves this by replacing the weak factory lines with multi-layer silicone. This material provides superior heat resistance and maintains structural integrity under the extreme pressures generated during heavy hauling.

Who is this for?

Best for diesel truck owners who tow heavy trailers, run aggressive tunes, or simply want to bulletproof their cooling system before a catastrophic failure leaves them stranded. If your truck is running original hoses, it is time for preventative maintenance.

Key Performance Benefits

• High Heat Resistance: Multi-layer silicone construction withstands engine bay temperatures far beyond factory rubber limits.
• Consistent Flow: Reinforced walls prevent hose expansion under pressure, ensuring steady coolant flow to the radiator.
• Longevity: Will not degrade, crack, or swell from exposure to oil, coolant, or heat cycling.
• Direct Fitment: Pre-molded to match exact factory routing for 2003-2018 Dodge Ram applications, making installation straightforward with basic hand tools.

When should I replace my Cummins coolant hoses?

Factory rubber hoses typically show signs of degradation around 75,000 miles. If you notice swelling near the connection points, a spongy feel, or micro-cracking along the bends, you should replace the entire system immediately to prevent a blowout on the road.

Goes Well With

Lowering your engine operating temperatures allows for safer, more consistent power delivery. To maximize these benefits, pair your upgraded cooling system with one of our Performance Chips to monitor diagnostics and dial in a more efficient tow tune.