Air Filter / Kohler 231847-SPack Size:1Kohler 231847-SDealer Choice 15-1208, Donaldson P528206, Landscaper Express 055005, Napa 2374, NHC 231847-S, Rotary 19-1385Kohler K161 and K181; for 8 HP enginesID: 3 ", OD: 4 3/8 ", Height: 2 11/32 "