Check the listing for details. Cummins Onan A050E991, OEM RV Generator Tune Up Maintenance Kit, KY Gas. Condition: New. Listed at 91.96 USD. Cummins/Onan A050E991Generator Maintenance Kit; For Use With Cummins 4.0KY-FA/26100 And 4.0KY-6747 Gas Generator Models; With 1 Generator Air Filter (Part Number 140-3280)/ 1 Generator Fuel Filter (Part Number 149-2457)/ 1 Spark Plug (part Number 167-0275)/ Two 32 Ounce Bottles Of Oil (Part Number 326-5336)Onan generators are known for their high quality and dependable performance. The best way to maintain that performance is by using genuine parts. These parts are designed and engineered specifically for your Onan generator to perform at its peak.Compatibility: Cummins 4.0KY-FA/26100 And 4.0KY-6747 Gas Generator ModelsWith Air Filter: YesWith Oil Filter: NoWith Spark Plugs: YesFeatures:Precision Design, State-Of-The-Art ManufacturingSpecified Levels Of Reliability And PerformanceTested And Designed Specifically For RV ApplicationsLong Lasting DurabilityLimited 1 Year Manufacture Warranty Visit My eBay Store: Your RV Solutions