Model: Onan QG4000 - A073X541 I 4.0HGLBA-8306 | EVAP Model | Watts - 4000W GASOLINE | VARIABLE SPEED | RPM - 2400-2900 | CARB Compliant
3-5 DAY LEAD TIME
Power for Your RV Adventures with America's Most Trusted RV Generator
For over 80 years, Cummins Onan has been the gold standard in RV power generation. The QG4000i delivers whisper-quiet, rock-solid performance wherever the road takes you, backed by North America's most extensive service network.
Why Choose the QG4000i?
Unmatched Quiet Operation
At just 66.5 dB(A) from 10 feet away, the QG4000i runs quieter than normal conversation. It meets strict National Park Service requirements (60 dB(A) @ 50 ft), so you can enjoy nature's sounds—not engine noise—in even the most pristine campgrounds.
Smart Technology Built In
Computer-controlled variable speed operation matches engine speed to load demand,
minimizing noise level and vibration.
Built to Last
The overhead valve (OHV) engine design eliminates decarboning maintenance while maximizing fuel efficiency. Sealed connectors and fully enclosed housing with integrated muffler protect critical components from the elements. Every QG4000i is backed by a comprehensive 3-year limited warranty.
Compact & Lightweight
Weighing just 149 lbs with a space-efficient footprint (30" × 20.3" × 14.0"), the QG4000i delivers maximum power without sacrificing precious cargo capacity.
Technical Specifications
Power Output
- Output: 4000W (120V, 60Hz)
- High power quality with inverted electrical output for sensitive RV loads.
- Fuel: Gasoline with CARB compliance
Performance
- Sound Level: 68 dB(A) @ 10 ft, half-load
- Air Conditioner Operation: 4.0kW generator set will start and run one 15000 BTU high efficiency air conditioner plus 2000-Watt base load at 50°C and 500ft. 4.0kW generator set will start and run one 15000 BTU high efficiency air conditioner with no additional base load at 50°C and 5000ft.
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Fuel Efficiency:
- No Load: 0.15 GPH
- Half Load: 0.25 GPH
- Full Load: 0.47 GPH
Physical
- Dimensions: 30" L × 19.7" W × 14.4" H
- Weight: 178 lbs
- Operating Range: -22°F to 122°F (-30°C to 50°C)
Engine
- Type: Cummins Onan 4-cycle, single cylinder, 389cc OHV
- Displacement: 23.7 cubic inches
- Maximum Power: 10.9 bhp max @ 3600 RPM
- Starting: Remote 12V, 3-wire negative ground
- Oil Capacity: 2.0 quarts
Note: CARB Compliant. Meets U.S. EPA and California emissions requirements.
Alternator
- Design: Cummins Onan revolving field, self-excited, 2-pole AC
- Voltage Regulation: Microprocessor-controlled digital regulator
- Cooling: Direct-drive centrifugal blower with cast aluminum housing
- Construction: Drip-proof, permanently aligned to engine
Ready to Ship
In Stock Now
Don't let your next adventure wait. Call Buckeye Power Systems today for a shipping quote and get your RV equipped with the generator that serious travelers trust.
Experience the Cummins Onan difference—where eight decades of innovation meet modern reliability.