Make sure your freeze plugs stay firmly mounted in your 1989-2018 Dodge Ram Cummins 5.9L or 6.7L engine with this bolt in freeze plug from XDP. Increased coolant pressure via high engine RPM, differences in cooling temperatures, faulty freeze plugs and other things can cause the factory plugs to blow out. This kit eliminates that risk. These plugs are constructed of CNC machined 6061 aluminum and features an o-ring gasket for a leak free seal.