This foam air filter replaces Tecumseh O.E.M. #31700. 3HP-H22, H25, H30, 3.5 HP-H35, LV35, LAV35, 4 HP-H40, HS40 LAV40, V40, 5 HP-H50, HS50, LAV50, V50, VH50, 6HP-H60, HH60, V60, VH60, 7HP-HH70, HM70, V70, VH70, 8HP-H80, HM80.