RVMP Flex Power 4000i Dual Fuel Mobile Generator 4.0kW Single Phase 120V 224cc OHV Air Cooled Gas or Propane New

Sale price$3,699.00


RVMP Flex Power 4000i Dual Fuel Mobile Generator 4.0kW Single Phase 120V 224cc OHV Air Cooled Gas or Propane New

Designed for permanent installation. The RV Mobile Power™ Flex Power® 4000i can run on gas or propane and runs on a flexible and reliable single-cylinder 224cc OHV air-cooled engine with a digital governor. It is designed to be compact at 121 lbs., quiet, powerful, and efficient. Run your RV’s appliances directly or re-charge your battery bank for extended off-grid boondocking.


  • Offers stepped-up power-on-demand, eliminating issues of overload. The motor slows down when you reduce the load and will speed up when you resume a higher load. High performance, low cost, quiet operations, and fuel efficiency make this RV generator the best in its class by every measure.
  • Dual Fuel - 2 types applicable in one unit: Gasoline or Propane
  • Electric start system - Hassle-free with remote start lets you start the generator with emergency backup recoil start
  • Designed for reliable service with a total low harmonic distortion of 3% for use with sensitive electronics. Consistent output allows for a quieter run without loud rev cycles.
  • Heat sensor - Built-in protection from overheating and over-revving
  • Digital: Including a digital valve controller that offers auto shut-off for fire prevention. Multi-pole PM brushless alternator incorporates a digital voltage regulator. Digital hour reading to easily measure running time for maintenance.
  • 100% replacement for Onan installed generators - Fits in the same space as Onan and other competitors.
  • Exceeds U.S. Forest Services (USFS), CSA, RVIA, and EPA emission requirements.
  • Original equipment for Forrest River, NeXus RV, and Thor Industry.
  • Backed by our guarantee to provide you the best customer support and a 3-year limited warranty.


Lubrication Splash
Emergency Starting Recoil Start
No Load .12 Gal/hr /.79 lb/hr
Half Load .30 Gal/hr /2.2 lb/hr
Full Load .6 Gal/hr / 3.3 lb/hr
Air Conditioner (BTU) - At 100°F/38°C and 500 ft./152.4 M Altitude One 15,000
Additional Watts - At 100°F/38°C and 500 ft./152.4 M Altitude 2300 (Base Load)
Battery Charger At 100°F/38°C and 500 ft./152.4 M Altitude 600
Sound Level at 10 ft./3 M At Half Load 48
RVIA Approval Yes
EPA Approval Yes
CSA Approval CSA 22.2 No. 100-14
USDA Approval Yes
Set Dimensions (LxWxH) 29.5" X 19.25" X 13.5"
Weight 121 lbs.
Warranty 3 Years Limited
EPA Emissions Durability 500 Hours
Watts 4000/3800
Frequency 60
Volts 117 - 120
Amps 33.3
Alternator Design Multi Pole PM

Order shipment preparation takes 3 days. Once shipped orders usually take 2 weeks to be delivered. These are estimations; delivery can be delayed for reasons beyond our control. You can always contact us to know the exact delivery time once you placed an order with us. Have a look at our shipping policy here.

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