Cummins Coolant Bypass Kit 03-05 Auto Trans with Stainless Steel Braided Line Fleece Performance D&J Precision Heads and Engine Parts the Drop-In Series System protects

the Drop-In Series System protects the L5P's injection system from premature failure

Duramax Adjustable High Performance System Features:

thermal stability

16% More OD apply area for firmer

Cummins Coolant Bypass Kit 03-05 Auto Trans with Stainless Steel Braided Line Fleece Performance D&J Precision Heads and Engine Parts the Drop-In Series System protectsIncreased 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