Cummins Onan Generator Maintenance Kit for KY GasolineCummins Onan Generator Maintenance Kit for KY Gasoline THIS KIT SERVICES ONAN 4000 GENERATORS ONLY! This kit has everything you need to keep your Cummins Onan Generator running at peak performance. Cummins Onan generators are known for their high quality and dependable performance. To maintain that performance level, service and maintain your generator with genuine Cummins Onan parts. Kit includes: One Air Filter (140 3280)One Fuel Filter (149