Generac Maintenance Kit, 11kW, 530cc Kit (For HSB models prior to 2013) Generac Standby Generator Maintenance Kit, Designed for the 10kW (530cc) Air-Cooled Engine Tune-Up Kit, Keep your generator running at optimum performance Contents: Air Filter, Oil Filter, Oil Funnel, Spark Plug, Chamois, Instruction Manual, Reminder Sticker (2008 to 2012) Includes: air filter, oil filter, spark plugs, oil funnel, chamois Oil must be purchased separately Filter color may vary but this will not affect performance.