{"product_id":"gps-tune-up-kit-for-cummins-onan-qg4000-4ky-rv-generator-onamax-15w40-oil-filters-spark-plug","title":"GPS Tune-Up Kit for Cummins Onan QG4000 (4KY) RV Generator — ONAMAX 15W40 Oil, Filters \u0026 Spark Plug","description":"\u003cp\u003e\u003cstrong\u003eComplete OEM tune-up kit for the Cummins Onan QG4000 (4KY) generator, including ONAMAX 15W40 oil and all required maintenance parts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis GPS Generator Parts Specialists tune-up kit is built specifically for the Onan QG4000 (4KY) RV generator. It brings together genuine Onan replacement parts and GPS-supplied tools so you can perform scheduled maintenance confidently. The kit targets the parts typically serviced during routine upkeep—engine oil, filters, and a fresh spark plug—plus clear guidance on oil specs and plug gap settings.\u003c\/p\u003e\n\n\u003ch3\u003eWhat exactly is included in this Onan QG4000 tune-up kit?\u003c\/h3\u003e\n\u003cp\u003eThe kit assembles every OEM hard part required for a standard tune-up of the 4KY series generator. Components are matched to Onan part numbers to avoid compatibility issues and include the oil formulated for Spec A through N engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eONAMAX 15W40 oil (2 bottles) — Onan PN 326-5336\u003c\/li\u003e\n  \u003cli\u003eOnan spark plug — PN 167-0275\u003c\/li\u003e\n  \u003cli\u003eOnan air filter — PN 140-3280\u003c\/li\u003e\n  \u003cli\u003eOnan fuel filter — PN 149-2457\u003c\/li\u003e\n  \u003cli\u003eGPS spark plug gap tool — PN 627-0560\u003c\/li\u003e\n  \u003cli\u003ePrinted guidance on oil selection and spark plug gap\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this kit simplify regular maintenance?\u003c\/h3\u003e\n\u003cp\u003eEverything you need for a standard service visit is consolidated so you won’t have to hunt for correct part numbers. Using OEM parts reduces the risk of fitment problems and helps maintain the generator’s expected performance characteristics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle purchase covers oil, filters, and ignition parts\u003c\/li\u003e\n  \u003cli\u003eOEM part numbers ensure correct fit and function\u003c\/li\u003e\n  \u003cli\u003eIncluded gap tool and documentation cut setup time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich oil and service specs does the kit support?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains ONAMAX 15W40 meeting Onan’s Spec A through N requirements for the QG4000 engine. It also includes notes on how to choose the right oil and the correct spark plug gap, so you follow factory-recommended service intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eONAMAX 15W40 designed for Onan engine specifications\u003c\/li\u003e\n  \u003cli\u003eTwo bottles included to cover a full oil change\u003c\/li\u003e\n  \u003cli\u003eDocumentation specifies Spec A–N compatibility and gap specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDo I need any extra tools or parts to complete a tune-up?\u003c\/h3\u003e\n\u003cp\u003eThe kit supplies the main replacement parts and a spark plug gap tool, but a few common shop tools are still required for the job. You’ll need basic hand tools, a drain pan, and possibly a torque wrench for final spark plug installation if your service practice calls for torque specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eKit includes the plug gap tool; hand tools not included\u003c\/li\u003e\n  \u003cli\u003eBring a drain pan and rags for oil change work\u003c\/li\u003e\n  \u003cli\u003eTorque wrench recommended for proper spark plug seating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This kit is aimed at RV owners, mobile technicians, and shop service teams who maintain Cummins Onan QG4000 (4KY) generators and prefer genuine Onan parts. It’s especially useful for those who want an all-in-one maintenance pack with the correct oil grade, factory part numbers, and a practical gap tool to keep generator performance reliable between professional services.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the oil in this kit compatible with Onan Spec A–N engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes ONAMAX 15W40 formulated to meet Onan specifications A through N for the QG4000.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit cover a full oil change for the QG4000?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Two bottles of ONAMAX 15W40 are included to perform a complete oil change for the generator.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GPS","offers":[{"title":"Default Title","offer_id":56806303990100,"sku":"B0998243T2","price":182.03,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/gps-onan-qg4000-kit-layout.jpg?v=1786814667","url":"https:\/\/gardenluxe.co.uk\/products\/gps-tune-up-kit-for-cummins-onan-qg4000-4ky-rv-generator-onamax-15w40-oil-filters-spark-plug","provider":"Gardenluxe Uk","version":"1.0","type":"link"}