Coolant Bypass for 2007.5-2012 Ram with 6.7L Cummins Fleece Performance

Even out 6.7L coolant temperatures

On the 6.7L Cummins, the cylinders at the back of the block don't get enough coolant flow, so they run hottest. That can build pressure in the back of the block and push out freeze plugs, including the small ones under the valve cover.

Fleece's bypass adds a second thermostat that opens on temperature rather than pressure, keeping all six cylinders at a steady temperature before pressure becomes a problem. It fits like a factory part, and the braided hose with AN O-ring ends keeps the install leak-free.

Who it's for

Owners of 2007.5-2012 Ram 2500/3500 6.7L Cummins trucks who want better cooling reliability.

Key specs (per Fleece)

What's included

• Rear bypass thermostat housing
• Front bypass thermostat housing
• Crossover tube gaskets
• Braided bypass hose with heat sleeve and AN fittings
• Back pressure sensor mounting block and sensor line
• Mounting hardware

Fitment notes

• Fits 2007.5-2012 Ram 2500/3500 with the 6.7L Cummins (per Fleece).
• California: Fleece lists CARB EO D-834-7 for this part.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.