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Cummins Onan RV QG4000 - 4KYFA-26100 - 4.0kW RV Generator (Gasoline)

Model: QG4000  |  Item Number: A055E866
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Reg. Price: $4,899.00 $4,378.00
CARB Compliant Power Equipment

Usually Ships in 2-5 Business Days
Ships Directly From Manufacturer

Features for the Onan QG4000

The Cummins Onan 4.0 KYFA features exceptionally quiet operation, and an enclosed spark-arresting muffler perfect for camping in your favorite national park. The 4.0 KYFA is ideal for light and medium-duty commercial applications with its small size and weight constraints.

4-cycle Air-cooled, single cylinder engine for reliable consistent power.

Integral enclosure cover and stamped steel base.

Microprocessor control with diagnostic.

Suitable for medium-duty commercial mobile applications.

Meets National Park Service sound level requirements (60 dB(A) @ 50 ft) for use in national parks.

Lightweight, compact.


Manufacturer: Cummins

SKU: 4.0KYFA-26100

Model Number: QG 4000

Generator Grade: Recreational

Generator Style: RV Generator


Engine/Motor Brand: Cummins

Engine Model: E095H

Fuel Type: Gasoline

Starting System: Electric

Horsepower: 9.3 HP

Engine/Motor Type: Air-Cooled, single cylinder, Overhead Camshaft (OHC)

Displacement: 304 cc

Engine RPM: 3600 RPM

Generator RPM: 3600 RPM

Fuel Cons. @ 50% Ld: 0.5

Fuel Cons. @ 100% Ld: 0.7

Fuel Induction System: Carburetor

Auto Choke: Yes

Lubrication System: Splash

Engine Governor: Electronic

Operational Volume (dB @10ft): 68.0

Operational Volume (dB @50ft): 60.0

Muffler/Exhaust: Enclosed Spark-Arrestor


Surge Start Watts: 4,000.0

Continuous Rated Watts: 4,000.0

Prime Rating Watts: 4,000

Phase: Single-Phase

Voltage: 120

Rated Amps @ Min Volt (Commonly 120v): 33.3

Frequency: 60 Hz

Power Factor: 1.0

Poles: 1

Alternator: Brush

Voltage Regulation: Auto Voltage Regulation

Voltage Regulation Type: Digital

Frequency Regulation: Auto Frequency Regulation

Circuit Breakers: 30 Amp

Insulation: Class H


Weight (Lbs.): 178

Ship Weight (Lbs.): 228

Operating Weight (Lbs.): 178

Dimension No Wheel Kit: 19.7"W x 30"L x 14.4"H

Agency Compliance: CARB (California), EPA, National Park Approved

QSP: 2wk

Stk. Itm.: No

This product may contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. For more information, go to

Technical Specs for the Onan QG4000*

* These Technical Specs are provided by the manufacturer at the beginning of the model year. Please be aware that the manufacturer may decide to change these specs at any given time without notice.

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