3.0 LITER. Reservoir hose o-ring. A component which prevents the coolant expansion tank Hose from leaking. A round Ring used to seal between the Heater Hose and it's mounting surface. A round Ring used to seal between the Radiator Hose and it's mounting surface. All Required. O-Ring. Coupling seal. Engine Coolant Overflow O -. Engine Coolant Pipe O -. HVAC Heater O -. Radiator Coolant O -. Reservoir o -. Return o -. Suction tube o -. Water inlet o -. Included with: Coolant Hose, Heater Hose, Hose, Inlet Hose, Rear Hose, Reservoir Hose, Suction tube, Upper Hose, Water inlet Hose.