KOHLER 25 083 04-S Engine Air Filter CH18S, CH20S, CH22S, CH25S And CH26S With Heavy Duty Dual Element Filters KOHLER Genuine Part Fits models CH18S, CH20S, CH22S, CH25S and CH26S with heavy duty dual element filters 1-13/16-inch inside diameter, 2-1/4-inch outside diameter, 10-1/4-inch height Cylindrical shape Warranty - 90 days against defects in materials or workmanship