Fleece Performance Coolant Bypass Kit 03-07 5.9L Manual Trans Cummins DE-VC400HX40 Meets SFI 29

Meets SFI 29

Fits single and dual rear wheel applications on 2017

Help eliminate the chance of scored rear cylinders and blown freeze plugs on your 5

They frequently fail leaving you without 4 wheel drive when you need it

Fleece Performance Coolant Bypass Kit 03-07 5.9L Manual Trans Cummins DE-VC400HX40 Meets SFI 29Help eliminate the possibility of scored rear cylinders and blown freeze plugs on your 5. 9 Cummins with this Coolant Bypass Kit from Fleece Performance! The Fleece Coolant Bypass 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 across all six