4.0 LITER. Oil hose o-ring. S8 PLUS. Gasket For Oil Cooler. O-Ring. O-Ring used on the Engine Oil Cooler Line. Part cannot be reused/reinstalled. hose o -. Engine Cooler Connector O -. Engine Cooler Gasket. Inlet. Outlet. Pressure. Return. Included with: Inlet Pipe, Oil hose, Outlet Pipe.