Model: Onan QG4000 - A055E867 I 4KYFA-6747 | Watts - 4000W GASOLINE | RPM - 3600
✅ IN STOCK - Ready to Ship
Power Your Adventures with America's Most Trusted RV Generator
For over 80 years, Cummins Onan has been the gold standard in RV power generation. The QG4000 delivers whisper-quiet, rock-solid performance wherever the road takes you, backed by North America's most extensive service network.
Why Choose the QG4000?
Unmatched Quiet Operation
At just 68 dB(A) from 10 feet away, the QG4000 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
Microprocessor control with integrated diagnostics monitors your generator's health and optimizes performance automatically. When you need power, you get it—reliably and efficiently.
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 QG4000 is backed by a comprehensive 3-year limited warranty.
Compact & Lightweight
Weighing just 178 lbs with a space-efficient footprint (30" × 19.7" × 14.4"), the QG4000 delivers maximum power without sacrificing precious cargo capacity.
Technical Specifications
Power Output
- Output: 4000W (120V, 60Hz)
- Fuel: Gasoline with EVAP compliance
Performance
- Sound Level: 68 dB(A) @ 10 ft, half-load
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Fuel Efficiency:
- No Load: 0.3 GPH
- Half Load: 0.5 GPH
- Full Load: 0.7 GPH
Physical
- Dimensions: 30" L × 19.7" W × 14.4" H
- Weight: 178 lbs
- Operating Range: 0°F to 120°F (-18°C to 49°C)
Engine
- Type: Cummins Onan 4-cycle, single horizontal cylinder, OHV
- Displacement: 18.5 cubic inches
- Maximum Power: 9.5 bhp (7kW)
- Starting: Remote 12V, 3-wire negative ground
- Oil Capacity: 1.6 quart
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.