Tune up kit for the John Deere LT180, LT190, LTS180, LX277, LX280, LX288 (starting with serial # 090001), GT235 (starting with serial # 090001), 325 (serial number starting with 070001), and GX325 with the FH500V, FH531V, and FH580V Kawasaki engines. The kit comes with a new air filter (replaces M137556), pre filter, oil filter (made in USA), fuel filter, and 2 NGK BPMR6A spark plugs.