You should remove the charge air inlet pipe, the cooling fan shroud bracket bolts, the cooling fan shroud bracket, the lower exhaust gas recirculation (EGR) cooler pipe, the oil pan skid plate bolts and plate, the oil filter, the oil cooler adapter nuts and studs from the flywheel housing, the oil cooler assembly bolts, the oil cooler adapter bolts, the oil cooler, and adapter, the coolant pipe nuts, the coolant pipe, the
Oil Filter Adapter/oil cooler O-ring seals and the coolant pipe O-ring and gasket.