Oregon 30-813 Air Filter Shop 5-Pack of 30-107 Replacement Part Blue seal, fits 3, 3.5, 4 and 5 HP max engines 90700, 91700, 110700 and 130700 series; Also use on 4 and 5 HP 2 cycle engines 6-1/2" L x 4-1/2" W x 3/4" H Use Oregon 30-038 foam pre-cleaner Replaces Briggs # 397795, 397795S and John Deere PT 11025, 15853