The A050E993 Cummins Onan Maintenance Kit is designed for use with the Cummins Onan Propane RV Generator QG 4000 Series. This kit has everything you need to keep your RV's 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 includesOne Air Filter (140-3280)One Spark Plug (167-0275)Two Ona Max Oil (326-5336) Spark Plug (p/n 167-0275) Two quarts Ona Max Oil (p/n 326-5336) | Cummins Onan Generator Maintenance Kit For KY Propane, A050E993