Fleece Performance Coolant Bypass Kit With Stainless Steel Line For 94-98 5.9L Cummins 2003-2007 6.0l powerstroke 2011–2016 GMC Sierra 3500HD 6

2011–2016 GMC Sierra 3500HD 6

2001-2010 Chevrolet silverado 6

2006-2007 Dodge Ram 5

NOT intended for abusive off-road use

The Pro model steps things up in a big way

Fleece Performance Coolant Bypass Kit With Stainless Steel Line For 94-98 5.9L Cummins 2003-2007 6.0l powerstroke 2011–2016 GMC Sierra 3500HD 6The 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 thermostat, that unlike other brands, works based on