Fleece Performance 03-07 Dodge 5.9/6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans) 7.3 2015 Chevrolet Silverado 3500 HD

2015 Chevrolet Silverado 3500 HD LT

Constructed of mandrel bent

Works with OE intercooler

2019 Ford F-250 Super Duty Platinum

70AR race compressor cover with drilled hole surge ring for maximum air flow

Fleece Performance 03-07 Dodge 5.9/6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans) 7.3 2015 Chevrolet Silverado 3500 HDIncreased 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,