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

The Fleece Performance coolant bypass for the 2007.5-2012 RAM with a 6.7L Cummins is designed to seamlessly integrate with your truck, providing an original equipment (OE) fit and finish.

The rear cylinders of the 6.7L Cummins engine often suffer from inadequate coolant flow, leading to higher coolant temperatures. This can result in excessive pressure within the cooling system, particularly in the rear of the block, which may cause freeze plugs to blow out—either externally or the smaller ones located under the valve cover—resulting in failure. 

Our coolant bypass kit features a secondary thermostat that operates based on temperature rather than excessive pressure, addressing the issue before it leads to pressure problems. This ensures consistent temperatures across all six cylinders.

**Benefits:**
- Lowers coolant temperature at the rear cylinders
- Ensures consistent temperatures throughout all cylinders
- Prevents damaging coolant pressure buildup
- Complete kit includes braided hose and AN O-ring fittings for a leak-free installation

**Kit Includes:**
- Rear coolant bypass thermostat housing
- Front coolant bypass thermostat housing
- New EGR crossover tube gaskets
- Braided nylon coolant bypass hose with a protective high-temperature sleeve and AN fittings
- Exhaust back pressure sensor mounting block and back pressure sensor line
- Mounting hardware