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Diesel Fire Pumps - Highly & Lesser Regulated

Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® 3406C Fire Pump Engine

The Cat® 3406C Industrial Diesel Fire Pump Engine is offered in ratings ranging from 218-359 bkW (292-482 bhp) @ 1750-2300 rpm. These ratings are non-certified and available for global non-regulated areas. They are FM Approved and UL Listed. Additional 3406C ratings with or without radiators are available, but not FM approved or UL listed. Starting on demand is a must for a fire pump engine - always. Cat® fire pump engines have a reputation for reliable starts and long efficient service.

  • Specification Summary

  • Minimum Power 218.0 bkW
  • Maximum Power 359.0 bkW
  • Frequency 1750-2300 rpm
  • Emissions Non-Certified. Available for global non-regulated areas. FM Approved, UL Listed

Product Details

Power Rating

Minimum Power 218.0 bkW
Maximum Power 359.0 bkW
Frequency 1750-2300 rpm

Emission Standards

Emissions Non-Certified. Available for global non-regulated areas. FM Approved, UL Listed


Engine Configuration Inline 6, 4-Stroke-Cycle Diesel
Bore 137.2 mm (5.4 in)
Stroke 165.1 mm (6.5 in)
Displacement 14.6 L (893 in³)
Aspiration Turbocharged Aftercooled
Compression Ratio 14.5:1
Rotation (from flywheel end) Counterclockwise
Cooling System Capacity 32.2 L (34 qt)
Lube System (refill) 34.1 L (36 qt)
  • Air Inlet System
    •  Dry or watercooled manifold and turbocharger
  • Charging System
    •  Charging Alternator, 24 volt, 35 amp
  • Control System
    •  Hydra-mechanical governor
  • Hydra-mechanical governor
    • Cooling System
      •  Thermostats and housing
      •  Jacket water pump, gear driven, centrifugal
      •  Heat exchanger
      •  Expansion tank
      •  FM Required Raw Water Cooling Loops: 1.5" iron, horizontal or vertical, 1.5" 316 stainless steel, horizontal or vertical
      •  Optional Radiator, not UL listed or FM approved
    • Exhaust System
      •  Exhaust manifold, water-cooled (wet) or dry
      •  Exhaust elbow, dry, 152 mm (6 in), 4 bolt flange
    • Flywheels and Flywheel Housing
      •  SAE No. 1 flywheel
      •  SAE No. 1 flywheel housing
      •  SAE standard rotation
    • SAE No. 1 flywheel
      • SAE No. 1 flywheel housing
        • SAE standard rotation
          • Fuel System
            •  Fuel filter, LH
            •  Fuel transfer pump
            •  Primary fuel filter / water separator
          • Instrumentation
            •  Instrument panel, LH
            •  Engine oil pressure gauge
            •  Fuel pressure gauge
            •  Water temperature gauge
            •  Service meter
          • Instrument panel, LH
            • Engine oil pressure gauge
              • Fuel pressure gauge
                • Water temperature gauge
                  • Service meter
                    • Lube System
                      •  Crankcase breather
                      •  Oil cooler
                      •  Lube oil filter
                      •  Oil filler in valve cover and dipstick, both RH
                      •  Rear sump oil pan
                      •  Oil filler in valve cover
                      •  Dipstick
                    • Mounting System
                      •  Supports
                    • Power Take-Offs
                      •  Flywheel stub shaft
                    • Protection System
                      •  Stop-Start System, automatic (compatible with NFPA 20 requirements, able to be energized from either of two battery sources and capable of manual starter actuation)
                    • General
                      •  Vibration damper and guard
                      •  Lifting eyes
                      •  Paint - fire pump red, optional radiator painted black
                    • Vibration damper and guard
                      • Lifting eyes
                        • Paint - fire pump red, optional radiator painted black
                          Catepillar Equipments