Fleece Performance Coolant Bypass Kit With Stainless Steel Line For 03-07 5.9L Cummins With Manual Transmission to be categorized Front Lift Height: 5

Front Lift Height: 5

2003–2007 Ford F-550 Super Duty 6

Reverse Lockout Feature meets NHRA/IHRA Requirements

Complete Set of 8 new lines - corrosion resistant

Fleece Performance Coolant Bypass Kit With Stainless Steel Line For 03-07 5.9L Cummins With Manual Transmission to be categorized Front Lift Height: 5The 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, that unlike other brands, works based on temperature