Maintenance Kit Includes: UGP replacement filter for 0J8478S Generac Oil Filter 070185ES 2 Spark Plugs (Champion RC12YC or Equivalent) Oil Funnel Cloth Maintenance Kit is for standby home generators with 20-Kilowatt 999cc engines. Scheduled maintenance is a necessity for all standby generators. The Generac 6485 Air Cooled Scheduled Maintenance Kit offers all the hardware necessary to perform maintenance on your Generac air-cooled generator. Maintenance is recommended every 200-hours or 2-years and if your generator is running in a dusty environment a more frequent maintenance schedule may be required. The 6485 Maintenance Kit contains a pre-cleaner, Universal Generator Parts replacement air filter, Generac oil filter, oil funnel, (2) spark plugs, blue cloth, instruction manual and preventative maintenance reminder sticker. Further maintenance details can be found in the generator's owners manual. This maintenance kit contains a replacement air filter and is therefore cheaper but still just as effective as a standard Generac maintenance kit