Fleece Performance Coolant Bypass Kit With Stainless Steel Line For 98.5-02 5.9L Cummins programmers simply set the low-speed trim

simply set the low-speed trim to Level 5

+12 HP and +32 lbs

This makes installation and inspection quick and easy

all backed by MagnaFlow’s limited lifetime construction warranty

Fleece Performance Coolant Bypass Kit With Stainless Steel Line For 98.5-02 5.9L Cummins programmers simply set the low-speed trimThe rear cylinders on the 5. 9 6. 7L 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. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on