Fleece Performance 03-07 Dodge 5.9/6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans) Early Cummins 5.9 2020 Ford F-250 Super Duty

2020 Ford F-250 Super Duty Lariat

Backed by XDP's 1-Year Warranty

2009 Chevrolet Tahoe LS

These are our stage 7 hot competition injector

2015 Toyota 4Runner TRD Pro

Fleece Performance 03-07 Dodge 5.9/6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans) Early Cummins 5.9 2020 Ford F-250 Super DutyIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5. 9L 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,