Natural Gas or LP Gas generator


kW Ratings — Standby Range: 33-40

EPA-Certified for Stationary Emergency Applications

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  • Engine ManufactureGeneral Motors
  • kW Rating, Standby33-40
  • Hz60
  • Speed1800
  • Model40REZG
  • Fuel TypeNatural Gas or LP Gas
  • Alternator TypeBrushless

Standard Features

  • Kohler Co. provides one-source responsibility for the generating system and accessories.
  • The generator set and its components are prototype-tested, factory-built, and production-tested.
  • A one-year limited warranty covers all systems and components. Two-, five-, and ten-year extended warranties are also available.
  • The generator set accepts rated load in one step.
  • Kohler's unique Fast-Response(TM) permanent magnet excitation system delivers excellent voltage response and short circuit capability.


  • Sound and Weather Enclosures
  • IBC Seismic Certification
  • Dual Fuel NG/LPG
  • Block Heater
  • Battery Charger
  • Line Circuit Breakers
  • Rodent Guards
  • Remote Annunciator Panel