The 6.0L Ford Powerstroke's oil is responsible for not only cooling and lubrication, but it also is used for fuel injection as well via the high pressure oil pump. The factory oil cooler does a good job of maintaining proper oil temperature but over time can become plugged with contaminates from poor coolant or oil quality. Replace your failed or plugged oil cooler with a New Grizzly Replacement Oil Cooler. This oil cooler kit comes complete with all the necessary gaskets and seal for a leak free installation. The Grizzly Oil Cooler Kit also comes complete with a new oil cooler screen that is notorious for plugging.