Cummins Coolant Bypass Kit 03-05 Auto Trans with Stainless Steel Braided Line Fleece Performance D&J Precision Heads and Engine Parts 9L diesel engine with enough

9L diesel engine with enough fuel for multiple fueling upgrades

This ensures you are always drawing fuel into your pump and not drawing air into the fuel system as well as eliminates the dreaded

These valve covers will come with a custom billet breather and a 3/4 inch hose to keep costs down

back to the tank after it has been passed through the filtration process

Color: Black

Cummins Coolant Bypass Kit 03-05 Auto Trans with Stainless Steel Braided Line Fleece Performance D&J Precision Heads and Engine Parts 9L diesel engine with enoughIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5. 9 6. 7L 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