New
Description
When you're pushing your 2006–2007 Dodge 5.9L diesel (with automatic transmission) beyond 350 horsepower, your cooling system comes under extra stress. The rear cylinders receive less coolant flow and experience excessive heat, which can lead to high pressure in the block and potentially blow freeze plugs—whether externally or under the valve cover. This Fleece Coolant Bypass Kit incorporates a secondary thermostat that activates based on temperature, ensuring the rear cylinders receive adequate cooling before pressure becomes a problem. It includes high-quality O‑ring fittings and AN style hose connections, with your choice of braided black nylon or stainless steel hoses, for a secure, leak-free installation.
Features:
- Prevents critical cooling system pressure buildup
- No need to remove the cylinder head during installation
- Includes a secondary temperature-operated thermostat
- Ensures consistent coolant temperatures across all cylinders
- Available with braided black nylon or stainless steel hose options
- Comes with a 1‑year limited warranty