The EGR coolers in your Ford 6.4L is designed to cool EGR gas before it gets reintroduced into the engine. Over time your coolers can crack and allow for exhaust gas to pressurize the cooling system or coolant can make its way into the turbo and exhaust system leading to other failures. This replacement Vertical EGR cooler from Grizzly will restore proper operation of your trucks EGR system. The Grizzly EGR cooler is designed to meet or exceed factory specifications and is a direct bolt in replacement that comes complete with gaskets to ensure a leak and hassle free installation.