Air filter fits Tecumseh 36905, models LEV100, LEV115 & LEV120, Oregon 30-031, Stens 100-812 Tecumseh 36905 & Craftsman 65, RVS115 & RVS 120 Size: 2-3/4" L x 1-3/4" W x 2-7/8" H Oregon: 30-031, Stens: 100-812 Also fits 4-1/2, 5 & 5-1/2 HP engines