Generac"s generator maintenance kit offers all the hardware necessary to perform a complete maintenance on Generac liquid-cooled generators * Oil and coolant will need to be purchased separately based upon manufacturer recommendations * Maintenance is recommended at every 200 hours or 2 years * Includes air filter, oil filter, 4 spark plugs, spark plug wrench, oil funnel, chamois, and reminder sticker * For 2.4-liter 25-kilowatt low-speed and 45-kilowatt 3600-RPM generators