W/O SUPERCHARGER. Water outlet o-ring. A round Ring used to seal between the Radiator Hose and it's mounting surface. A seal that prevents oil from leaking out, or contaminants from enteRing the Cooling System Crossover Line. Engine Coolant Outlet Gasket. Engine Coolant Outlet O-Ring. Engine Cooling. manifold o -. pipe o -. Cooling System Crossover Line O -. Engine Gasket. Radiator Hose O -. Included with: Outlet Hose, Outlet pipe, Water manifold, Water Outlet, Water pipe.