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Cummins Onan 4KYFA-26100 QG 4000W Gasoline RV Generator

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5 Stars 4 product reviews
Average Product Review Rating: 5/5
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Cummins Onan QG Gasoline powered 4000-watt RV generator. Cummins GenSets are Lightweight, compact, and quiet. Perfect for truck campers. Runs one 13500 BTU air conditioner with a 2000-watt baseload and power to spare. Look in the Spec’s tab for Onan 4000 Generator Specs.

Cummins Onan 4KYFA-26100 Features:

  • Microprocessor control. Includes generator troubleshooting with diagnostic codes. Digital voltage regulation. Fault protection. Overload and overcrank protection/
  • Exceptionally quiet operation with a full housing and enclosed USDA Forest Service-approved, spark arresting muffler. Meets the National Park Service 60dB at 50 feet sound level requirement. 4-point isolation mounts decrease noise and vibration. Installation further reduces noise.
  • Lightweight and compact design. 30 inches x 19.7 x 14.4 inches (length x width x height). Weighs only 178 pounds.
  • Cummins-Onan E095H OHV engine. Operating temperature range from -20o F to 120o F. Electronic fuel pump with positive fuel safety shutoff. Replaceable air cleaner and automatic choke. Splash lubrication. Automotive-type starter.
  • RV 3-year limited warranty: Includes free 90-day adjustment policy for minor adjustments. Covers all parts and labor (excluding routine maintenance) for the first two years, then major parts and labor on the drive train and generator parts during the third year.
  • Circuit breakers: 30 A, 1-pole
  • 3 year limited warranty


4.0KYFA-26100 Spec Sheet 4KYFA-26100 Specifications Sheet
4.0KYFA-26100 Owner's Manual 4KYFA-26100 Owner's Manual
4.0KYFA-26100 Install Guide 4KYFA-26100 Installation Manual

Product Reviews

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  1. Onan QG4000 4K generator

    5 star rating Product Review Rating: 5/5

    Posted by on Aug 06, 2019

    AP Electric was the best price and the staff was fantastic to work with on my purchase. I had one of these in my RV. It lasted 13 years and over 800 hours. The RV was used primarily on the Jersey beach so this generator ran in some of the worst weather conditions possible. Sand, salt air and high humidity. It owed me nothing when I replaced it with the new one. I just finished the install of the new generator and it started right up and ran like a champ. I am off to the beach again this weekend with new power. Thanks AP and Onan Cummins!

  2. Easy Purchase

    5 star rating Product Review Rating: 5/5

    Posted by on Feb 14, 2018

    I'm a big fan of this brand. This is a quality generator at a quality price. My CUMMINS ONAN QG4000 4KW GASOLINE RV GENERATOR is dependable and quiet.

  3. very satisfied with my CUMMINS ONAN QG4000 4KW GASOLINE RV GENERATOR

    5 star rating Product Review Rating: 5/5

    Posted by on Feb 14, 2018

    This generator is exactly what I wanted. Compact and quiet. AP Electric did a great job and had a great price. Shipping was fast.

  4. Fantastic RV Generator. Cummins Onan QG4000 4kW Gasoline RV Generator

    5 star rating Product Review Rating: 5/5

    Posted by on Jun 11, 2015

    I want to my local RV dealer and they did not have this RV Generator in stock. I went online and found AP Electric. I called them to see you quickly they could ship it. They told me if I placed my order now I would have my tracking number in couple of hours. They did what they said they were going to do had the tracking information by the end of the day and RV generator arrived 2 days later. Great service keep up the good work. Very satisfied.

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