Description
The Fleece Coolant Bypass Kit is engineered for 2019–2022 Dodge Ram 2500/3500 trucks equipped with the 6.7 L Cummins engine. This seamlessly integrated, OEM-style kit improves coolant flow to the rear cylinders—which are prone to overheating—and prevents excessive pressure buildup in the cooling system. It adds a secondary thermostat that activates based on temperature rather than pressure, maintaining consistent cooling across all cylinders and helping avoid blown freeze plugs or internal failures.
Features:
- Increases coolant flow and decreases coolant temperatures at the rear cylinders
- Ensures consistent temperatures across all six cylinders
- Prevents damaging coolant pressure buildup
- Secondary thermostat operates based on temperature trigger
- Complete kit includes braided hose with AN‑O‑ring fittings for a leak-free installation
- Easily installs without fuel tank or system modifications
- Provides factory-level fit and finish
Kit Includes:
- Rear coolant bypass thermostat housing
- Front coolant bypass thermostat housing
- New EGR cross-over tube gaskets
- Black braided nylon coolant bypass hose with AN fittings
- Mounting hardware