K009 is the large version filter. Replaces Kohler O.E.M.# 52 050 02, 5205002, & 491056. Kohler oil filter for 14, 16, 18, 20 & 26 HP. Magnum engines. Also fits CH11-15, CV11-22, M18-M20, MV16-20 & K582. Also fits B & S 491056, Vanguards & twin cylinder engines, Case C26191, Gravely 042366, John Deere AM101207(w/Kohler engine), Toro, NN10147, Woods 70939. Thread size 3/4"-16", O.D. 3", Ht 3-7/16", Micron 25.5/27 micron