2.0 LITER TURBO. Oil filter o-ring. A round Ring used to Seal between the Engine Oil Filter Cover and it's mounting surface. A round Ring used to Seal between the Engine Oil Filter Element and its mounting surface. A Seal used to prevent leaks at the Engine Oil Filter housing Cover. Engine Oil Filter Element Seal. Engine Oil Filter Gasket. Element O -. Gasket. Housing Cover. Cap o -. Included with: Cap, Filter Element and Cap, Filter Element or Cap, Oil Filter.