Description OMC 2 Wire 3 Bolt 1981-1992 Trim Motor O.E No. 393988, 985237, 391264, 983019 This is a genuine NGK spark plug. NGK spark plugs come pre-gapped they are recommended and used by OEM manufacturers Sold eacThis is a genuine NGK spark plug. NGK spark plugs come pre-gapped they are recommended and used by OEM