Fleece Performance Coolant Bypass Kit 98.5-02 Dodge 5.9L Cummins 24 Valve

Fleece Performance Coolant Bypass Kit 98.5-02 Dodge 5.9L Cummins 24 ValveHelp eliminate the possibility of scored rear cylinders and blown freeze plugs with this Coolant Bypass Kit from Fleece! Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5. 9 Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the

Help eliminate the possibility of scored rear cylinders and blown freeze plugs with this Coolant Bypass Kit from Fleece!

Increased Coolant Flow, Decreased Coolant Temperatures
The rear cylinders on the 5.9 Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Fleece's coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.

Why do I need a Fleece Coolant Bypass?
One of the biggest issues on the 5.9/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.