ZJTBLL Onan RV QG Generator Tune-Up Kit for 5500/7000 (HGJAA/HGJAB/HGJAC) — Filters, Spark Plugs & Tools

ZJTBLL's tune-up kit is a complete service pack for Onan RV QG 5500 and 7000 generators, supplying oil, air, fuel filters, spark plugs and the tools needed for routine maintenance.

This kit gathers the essential replacement parts most technicians and DIYers use during a scheduled generator service. It includes the correct OEM-referenced components—122-0836 oil filter, 140-3116 air filter, 149-2341-01 fuel filter, and 167-1638 spark plugs—plus a wrench, gap tool, clamps and extras to streamline a single maintenance session for HGJAA, HGJAB and HGJAC models.

Which Onan and RV generator models does this kit fit?

This tune-up set is designed to match Onan RV QG series generators rated 5500 and 7000 watts. The parts correspond to common factory service references used across Marquis Platinum and Marquis Gold EFI configurations.

• Compatible generator models: HGJAA, HGJAB, HGJAC
• Works with Marquis Platinum QG EFI and Marquis Gold/RV QG variants
• Parts cross-referenced to OEM numbers for correct fit

What parts are included and why they matter?

The kit assembles filters and ignition items that protect engine components and maintain combustion quality. Using matched parts reduces contamination, supports steady oil flow, and helps keep fuel delivery and spark timing consistent.

• Oil filter 122-0836 (with matching wrench 420-0577) to trap metal, carbon and debris
• Air filter 140-3116 to stop dust and particulates entering the intake
• Fuel filter 149-2341-01 to protect the fuel system from contaminants
• Two spark plugs 167-1638, gap tool 627-0560 and four clamps for installation

How will replacing these parts affect generator performance?

Fresh filters and new spark plugs help restore efficient combustion, protect moving parts from abrasive wear, and can make starting more reliable. While results depend on overall engine condition, routine replacement reduces the causes of rough idling and fuel delivery issues.

• Cleaner oil flow preserves bearings and internal surfaces
• Clean intake air helps maintain correct air–fuel mixture
• New fuel filter prevents clogged injectors and pump strain
• Replaced spark plugs improve ignition consistency

Who is this kit for? This ZJTBLL tune-up kit suits RV owners, fleet maintainers, and service technicians who maintain Onan QG 5500 and 7000 generators and prefer a single, part-matched package for scheduled maintenance. It’s especially useful for routine service intervals, pre-season inspections, or when troubleshooting performance issues like hard starts or inconsistent running. The included wrench, gap tool and clamps make the kit a convenient all-in-one solution for a standard tune-up when you want factory-referenced parts without sourcing them individually.