AIR FILTER COMPATIBLE WITH: RIDE-ON MOWER MODELS: CH 18 CH18 CH 20 CH20 CH 22 CH22 CH 23 CH23 CH 25 CH25 CH 26 CH26 HP 25 CV25 ECH 637 ECH 730 PRE-FILTER CODE: BM 009813 175X140X75 KOHLER Code:009806 Original code: 24.083.03 2408303