GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan 5500/7000

In this review the GPS Tune Up Kit for Cummins Onan 5500 and 7000 generators is judged on completeness and serviceability for owners who do their own RV generator maintenance. The kit includes the Onan OEM hard parts and two quarts of ONAMAX 10W30 oil so a typical carbureted Onan service can be completed without hunting for individual parts. It suits mechanics and knowledgeable RV owners who want a single purchase that covers oil, filters, spark plugs and basic tools for a routine tune up.

Key Features

• Complete OEM parts: Includes the required Onan hard parts so the owner receives the correct filters and spark plugs for a proper tune up.
• ONAMAX 10W30 oil (QTY 2): Supplied oil is matched to the generator specification, reducing guesswork about correct viscosity and oil type.
• Essential filters included: Air, fuel, and oil filters are provided to restore filtration and engine protection after service.
• Handy service tools: Cup-type oil filter wrench and GPS spark plug gap tool are included to make removal and adjustment straightforward.
• Model coverage: Packaged for carbureted Cummins Onan HGJAB, HGJAC and HGJAE commercial models so buyers get parts suited to these engines.

Who It's For

This kit is best for RV owners, fleet technicians, or independent service shops that maintain Cummins Onan 5500 and 7000 generators and want an OEM-based parts package to perform scheduled maintenance. It is particularly useful when a single order that covers oil, filters, plugs and basic tools saves time.

Those who should look elsewhere include owners of non-carbureted or newer generator models not listed, and buyers who expect brand-new aftermarket tool sets beyond the included simple wrench and gap tool. Also verify the oil filter branding if a Fleetguard filter is preferred, since Cummins began using Fleetguard in place of the Onan brand starting in 2022.

Pros & Cons

Pros

• High-quality OEM parts help ensure correct fit and function for covered Onan models.
• Two quarts of ONAMAX 10W30 oil included so one purchase covers oil change needs for many services.
• Includes small service tools that make routine tasks like filter removal and plug gapping easier.
• Consolidates needed items into one kit to simplify maintenance planning and parts sourcing.

Cons

• Some customers reported the oil filter wrench was missing in certain orders, so inspect the kit on arrival.
• Not suitable for generators outside the specified HGJAB/HGJAC/HGJAE carbureted models or for non-carbureted engines.

Specifications

Brand	GPS (Generator Parts Specialist)
Engine models covered	Cummins Onan 5500 and 7000 (HGJAB, HGJAC, HGJAE)
Oil	Onan ONAMAX 10W30 (QTY 2) PN A063E183
Oil filter	Onan PN 122-0836 (Fleetguard used from 2022)
Spark plugs	Onan PN 167-1638 (QTY 2)
Air filter	Onan PN 140-3116
Included tools	Cup-type oil filter wrench 420-0577AL, GPS spark plug gap tool PN 627-0560

Our Verdict

For hands-on RV owners and technicians servicing carbureted Cummins Onan 5500 and 7000 generators, this GPS tune up kit is a practical, cost-effective choice because it supplies correct OEM parts and the recommended ONAMAX 10W30 oil in one package. It removes the hassle of sourcing individual items and offers good value, though buyers should check the kit contents on receipt and confirm model compatibility before ordering.

Frequently Asked Questions

Does the kit include oil?
Yes, it includes two quarts of Onan ONAMAX 10W30 oil (PN A063E183) suitable for the covered carbureted generators.

Will the oil filter always be Onan branded?
Starting in 2022 Cummins began using Fleetguard branded oil filters in place of the Onan brand; Fleetguard is owned by Cummins Filtration.

Are tools included to complete the service?
Yes, the kit includes a cup-type oil filter wrench and a GPS spark plug gap tool to assist with routine maintenance.