Generac Mobile Products MDG25IF4 Diesel Generator

Double tap to zoom




  • Compact size saves space on the job site
  • Small cabinet  with space-saving flip-tongue allows for 12 units on a flatbed truck
  • Integrated fork pockets and central lifting allow for easy of loading and unloading
  • Lightweight – can be towed by most work trucks and SUVs
  • Heavy gauge steel trailer EPA Tier IV Turbocharged, after-cooled diesel engine



  • External E-Stop is easy to locate and access in emergency situations
  • Interior cabinet and control panel lighting for enhanced visibility
  • Phase switch safety shutdown
  • Access doors with auto shutdown separates main breaker access from load cables; automatically shuts down unit if lug door is opened
  • Standard battery disconnect switch ensures all power is cut off during maintenance and storage
  • Controller located on rear of unit away from power wires and service points and lockable for security and safety
  • Fuel access is lockable and located away from power distribution
  • LED Trailer lights



  • Power Zone controller provides full programmability and easy-to-read status  screens
  • Large access doors allow for unobstructed access to service components and includes slam latches
  • No diesel particulate filter (DPF)
  • Long, 24-hour run time requires less fill-ups for more uptime
  • Aluminum enclosure is corrosion proof


Make Isuzu 4LE2T
EPA Emissions Compliance Tier IV Final
After-treatment System DOC only
Cylinder # 4
Type In-line
Displacement 133 in3 (2.2 L)
Bore - in (mm) 3.35 (85) Stroke - in (mm) 3.78 (96)
Compression Ratio 17.6:1
Intake Air Method Turbocharged
Engine Governing Electronic
Frequency Regulation (Steady State) 2%
Lubrication System  
Oil Pump Type Gear
Oil Filter Type Spin-on cartridge
Crankcase Capacity - qts (L) 11 (10.4)
Cooling System Type Pressurized closed
Water Pump Type Belt driven
Fan Type Pusher
Fan Speed (rpm) 1800
Fan Diameter - in (mm) 15.75 (400)
Coolant System Capacity - gal (L) 2.75 (10.4)
Fuel System  
Fuel Type Ultra low sulfur diesel
Fuel Specifications EN 590 / ASTM D974
Fuel Filtering (microns) 2
Fuel Inject Pump Make HP6
Fuel Pump Type Engine driven - gear
Injector Type Electronic
Engine Type Direct inject
Fuel Supply Line - in (mm) 0.375 (9.5)
Fuel Return Line - in (mm) 0.375 (9.5)
Engine Electrical System  
System Voltage 12VDC  
Battery Charger Alternator STD
Battery Size 720 CCA
Battery Voltage 12VDC (1)
Ground Polarity Negative

Would you like more information?