Air Filter Plus Pre-Filter For Briggs & Stratton Air Filter 796031, 591334, 594201, Pre-Filter 797704 Genuine OEM Briggs & Stratton Part Kit Includes : (1) 594201 Air Filter & (1) 797704 Pre-Filter ID: 1 5/8", OD: 3", Height: 5" Fits Various Briggs & Stratton Engines Including: 31A807-0905-G5, 31Q507-0001-H1, 31Q507-0002-H1, 31Q507-0003-H1, 31Q507-0004-H1, 31Q507-0005-H1, 31Q507-0006-H1, 31Q507-0007-H1, 31Q507-0008-H1, 31Q507-0010-H1, 31Q507-0011-H1, 31Q507-0012-H1, 31Q577-0009-H1, 31Q577-0013-H1, 31R507-0001-B1, 31R507-0002-G1, 31R507-0003-B1, 31R507-0004-B1, 31R507-0005-B1, 31R507-0006-B1, 31R507-0007-B1, 31R507-0008-B1, 31R507-0011-B1, 31R507-0012-B1, 31R507-0013-B1, 31R507-0015-B1, 31R507-0016-B1, 31R507-0018-B1 Also Compatible With John Deere Part Numbers: GY21435, MIU13038, MIU13963