Fleece Performance Coolant Bypass Kit 03-07 5.9L Manual Trans Cummins DE-VC400HX40 Note: Only fits vehicles with

Note: Only fits vehicles with straight 2-1/2" coupling to intake manifold

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

check out this inexpensive option from the pros at Alliant

FLOW AND PERFORMANCE: Constructed of mandrel bent

Fleece Performance Coolant Bypass Kit 03-07 5.9L Manual Trans Cummins DE-VC400HX40 Note: Only fits vehicles withHelp 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