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Generac MMG45 Mobile Diesel Generator | Rental


Generac Magnum MMG45IF4 Mobile Diesel Generators offer an Isuzu diesel engine, 27 hour runtime, and up to 40 kW of power at a quiet 65 dBA.

  • Isuzu diesel engine - EPA Tier 4 Final approved.
  • Electronic isochronous governing.
  • Idle switch.
  • Voltage regulation +/- 0.5% with Magnum PM600 Voltage Regulator.
  • Marathon Electric Superstart generator.
  • Polyethylene single-wall fuel tank with 120% containment.
  • Voltage Selector Switch - three position.
  • Power Zone controller with backlit color display and push buttons (see spec sheet below for details)
  • Lockable control box door with diagnostics window.
  • Lockable lug box with safety switch.
  • Remote start/stop contacts located in lug box.
  • Output ground connection lug inside lug box.
  • 225A main breaker with shunt trip.
  • Convenience receptacles with individual breakers.
  • 720 CCA wet cell battery.
  • Lockable battery disconnect.
  • Panel lighting for breakers, lugs, and selector switch.
  • CSA Certified.


  • Fully-lockable aluminum sound-attenuated enclosure.
  • UV and fade resistant, high temperature cured, white polyester powder paint.
  • Emergency stop switch located on outside of enclosure.
  • Central lifting point.
  • Multi-lingual operating/safety decals.
  • Document holder with operating manual including AC/DC wiring diagrams.
  • Interior cabinet lighting.


MMG45IF4 Spec Sheet

MMG45IF4 Operating Manual


  • Single Set Female Camlock Connections.
  • Buck Transformer Kit.
  • 4-Position Voltage Selector Switch.


  • Positive Air Shutoff (electronic).
  • 10 Amp Battery Charger.
  • AGM Sealed Battery (Optima) 720 CCA.
  • Leak Detection.


  • 60/40 Coolant.
  • Block Heater.
  • Dual Heated Fuel Filter.
  • CCV Heater.


  • Extended Run 160 Gallon Fuel Tank with Containment (Requires MTG032T Tandem Axle Trailer).
  • Auxilary Tank 3-Way Fuel Valve.


For questions or concerns, please feel free to contact us online, or call us directly here at (248) 348-8864.

Hours of Operation:

Monday-Friday: 7am-5pm

Saturday/Sunday: CLOSED


*All items are subject to availability. We will make our best efforts to inform you as soon as possible if the goods you have ordered are not available or if shipment may be delayed. All prices are subject to change without notification.

Order Delivery / Pick-Up:

Select items / orders are available for pick-up and/or delivery, if interested, please contact us to determine what your best option will be. We can provide you with a quote on an estimated delivery charge or schedule a pick-up time for your order.