RV Generators

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15 products

Cummins Onan P4500iDF 4500W Dual Fuel Inverter Generator with Black Cover - Side View | United RV Parts
Save $489.98 Free Shipping
Grey FIRMAN W03083 3000W Inverter Generator - Side View | United RV Parts
Save $460.00 Ships $99 Freight
Green Cummins Onan RV QG 3600 Watt LPG Generator - Side View | United RV Parts
Save $420.98 Ships $99 Freight
Cummins Onan RV QG 4.0KY-6747 4,000 Watt EVAP Gasoline Generator - Green Side View | United RV Parts
Save $373.75 Ships $99 Freight
Cummins Onan 6,000 Watt Diesel Generator Set 6.0HDKAH-1044 - Side View | United RV Parts
Save $1,219.85 Ships $99 Freight
Green Cummins Onan RV QG 7000 Watt Generator - Side View | United RV Parts
Save $310.10 Ships $99 Freight
Green Cummins Onan RV QG 7000 Watt Generator - Side View | United RV Parts
Save $1,000.00 Ships $99 Freight Ships Next Day-order by 1:00CT(M-F)
Cummins Onan RV QD 8000 Diesel Generator 8.0HDKAK-1046 - Side View | United RV Parts
Save $1,785.30 Ships $99 Freight

Shore power is not always available, and for many RV owners, a reliable generator is what makes off-grid camping practical. Whether you are dry camping in a remote location or need a backup power source when hookups are unavailable, the right generator keeps your appliances, air conditioner, and electronics running comfortably.

Our selection of RV generators includes portable and RV-mounted options across a range of wattage outputs to suit different power needs and RV sizes. We carry units from trusted brands built specifically for the demands of RV use. Before ordering, consider your RV's total power requirements, including your air conditioner's startup wattage, which is typically the largest draw you will need to account for.

Portable Power Unleashed: Onan P2500i and P4500i Generators

Onan's P2500i and P4500i generators epitomize portable power solutions, catering to diverse energy needs for outdoor adventures and on-the-go power requirements. Let's explore their features and functionalities.

What types of RV generators do you carry?

Our RV generator selection covers portable inverter generators for tailgating and boondocking, along with replacement parts for built-in motorhome gensets. You'll find units sized for running a 13,500 or 15,000 BTU air conditioner, charging house batteries, and powering kitchen appliances. For backup power planning, pair your generator with a quality surge protector and proper adapters from our RV plug adapters collection.

What size generator do I need for my motorhome?

Size your generator by adding up the running wattage of everything you plan to power at once. A single 15,000 BTU rooftop air conditioner typically needs around 3,500 starting watts and 1,500-2,000 running watts, so a 3,500-4,500 watt inverter generator handles most Class B and Class C setups. Larger Class A coaches running dual AC units, a residential refrigerator, and a microwave usually need a 5,500-7,000 watt onboard generator. Confirm your AC's startup draw before ordering.

Do you sell parts for older or used RV generators?

Yes. We stock common service parts for Onan, Cummins, and other onboard RV generators, including air filters, oil filters, spark plugs, and control components. If you're servicing other systems at the same time, check our RV electronics collection for transfer switches, monitor panels, and related power management parts. Have your generator's model and spec number ready when you call, that's the fastest way to confirm the right part.

How is shipping handled on RV generators?

Smaller portable inverter generators ship standard ground. Larger onboard units and heavier gensets ship via truck freight, and the freight cost is noted on each product page. Orders over $100 on qualifying parts and accessories ship free. If you need help confirming fitment or freight timing, text or call our team at 817-984-1852 before you order.