REPLACEMENT TUNE-UP KIT INCLUDES ONE AIR FILTER, ONE FUEL FILTER, AND A SPARK PLUG. THE AIR FILTER REPLACES PART NUMBERS 90071, 130305-08360, 0508361, 55-201, B1AF117, 100-293, AND 8735. LENGTH: 10 3/8" WIDTH: 2 7/8" HEIGHT: 1 11/32". THE FUEL FILTER REPLACES 125-527, 07-214, 13120507320, 13120519830, AND 38-9024. 3/16" FUEL LINE ENGINES UP TO 33CC. THE SPARK PLUG REPLACES 5574, BPM8Y, 10020, 130-884. THIS KIT MAY BE USED ON BACK PACK BLOWERS PB4600-059919 AND UP, PB6000, PB60-HT-TYPE 1E, PB4600 TYPE-1E, EB633, PB46HT-TYPE 1E SERIES.Warning:Lead-Nickel-Cancer and Reproductive Harm