KIT INCLUDES AIR FILTER, PRE FILTER, OIL FILTER, FUEL FILTER AND TWO SPARK PLUGS. THE AIR AND PRE FILTER REPLACE PART NUMBERS 100-168, 11013-7002, 11013-7001, 11013-7033, 11013-7011, 21538200, 21538300, 490-200-0004, M137556 AND MIU10955. THE FUEL FILTER REPLACES 24 050 10-S, 24 050 13-S, 49019-0027, 49019-7001, 49019-7005, OIL FILTER REPLACES 49065-2057, 49065-2062, 49065-2071, 49065-2084, 49065-7010, 83-283, 25 050 33-S, 52 050 02, 063-2010-00, AM101207 AND TWO BPMR4A SPARK PLUGS. AIR FILTER SPECS: WIDTH: 3 3/4" LENGTH: 8 5/16" HEIGHT: 1 3/16" WIDTH WITH TAB: 6 3/8". FITS MODELS 1500 SERIES TRACTORS, 988123, 988124, 988125, 988126, 988127, 991026 AND 991032. ALSO COMPATIBLE WITH 325, GT235, GX325, LT180, LT190, LX277, LX280 AND LX288 WITH CERTAIN ENGINES. FITS FH451V, FH500V, FH580V AND FH680D ENGINES. Warning:Lead-Nickel-Cancer and Reproductive Harm