Fleece Cummins Coolant Bypass Kit (2003-2005 Auto Trans) w/ Stainless Steel Braided Line DIFF COVERS AND PANS 1998.5-2002 CUMMINS 5.9L Monitor key vehicle parameters like

Monitor key vehicle parameters like EGT

For factory 22" wheels with big bore knuckle

Achieve shorter shifts and increased torque capacity without creating low-speed harshness

The piano black trim and smoked gray sidemarkers keep the color scheme neutral

Fleece Cummins Coolant Bypass Kit (2003-2005 Auto Trans) w/ Stainless Steel Braided Line DIFF COVERS AND PANS 1998.5-2002 CUMMINS 5.9L Monitor key vehicle parameters likeIncreased 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