Fleece Performance Coolant Bypass Kit W/Stainless Braided lines 06-07 5.9L Auto Trans Cummins AFE-49-42016 this muffler does not have

this muffler does not have any of the traditional packing found in many other mufflers that is known to breakdown over time

requiring arduous machine work

critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft

dual 1/8" NPT exhaust gas ports are supplied for gauges or testing

Fleece Performance Coolant Bypass Kit W/Stainless Braided lines 06-07 5.9L Auto Trans Cummins AFE-49-42016 this muffler does not haveHelp eliminate the possibility of scored rear cylinders and blown freeze plugs in your 5. 9 Cummins with this Coolant Bypass Kit from Fleece Performance! The Fleece Coolant Bypass with Stainless Lines solves the problem of excessive coolant pressure before it becomes a problem. The integrated secondary thermostat locates at the back of the block and allows coolant to flow freely when at normal operating temperatures ensuring consistent temperatures