Fleece Performance Coolant Bypass for 2019+ Ram with 6.7L Cummins

The rear cylinders on the 6.7L Cummins engine experience a lack of coolant flow, leading to higher coolant temperatures in that area. This can result in excessive pressure building up in the cooling system, particularly at the rear of the engine block. This pressure may cause freeze plugs to blow out, either externally or at the smaller plugs located under the valve cover, ultimately leading to engine failure.

Our coolant bypass kit addresses this issue by incorporating a secondary thermostat that operates based on temperature rather than excessive pressure. This innovative design prevents pressure buildup before it becomes a problem, ensuring consistent temperatures across all six cylinders.

**Benefits:**
- Lowers coolant temperature for the rear cylinders.
- Ensures uniform temperatures across all cylinders.
- Prevents damaging coolant pressure buildup.
- The complete kit includes a 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
- Black braided nylon coolant bypass hose with AN fittings
- Mounting hardware