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Cat 3412 Industrial Diesel Fire Pump Engine. Ratings: 476-551 bkW (638-739 bhp) @ 1750-2100 rpm are non-certified. Available for global non-regulated areas. FM Approved, UL Listed.

Engine Specifications

Minimum Rating 638.0 bhp 476.0 bkW Less
Maximum Rating 739.0 bhp 551.0 bkW Less
Emissions Non-certified Non-certified Less
Bore 5.4 in 137.0 mm Less
Stroke 6.0 in 152.0 mm Less
Displacement 1650.0 in3 27.0 L Less
Aspiration Turbocharged Aftercooled Turbocharged Aftercooled Less
Engine Weight, net dry 6018.0 lb 2730.0 kg Less
Oil Change Interval 250.0 hr 250.0 hr Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less
Flywheel and Flywheel Housing SAE No. 0 SAE No. 0 Less
Flywheel Teeth 151 151 Less

Capacity for Liquids

Lube Oil System (refill) 36.8 gal 139.0 L Less
Cooling System (engine only) 15.5 gal 58.0 L Less


Length 78.0 in 1980.0 mm Less
Width 51.2 in 1300.0 mm Less
Height 50.6 in 1285.0 mm Less

3412 Standard Equipment

Air Inlet System
  • Air cleaner, regular duty with service indicators
  • Turbocharged

Cooling System
  • Thermostats and housing
  • Jacket water pump, centrifugal
  • Heat exchanger installed
  • Expansion tank

Control System
  • Charging alternator 24 volt, 35 amp
  • Governor control
  • Hydra-mechanical governor

Exhaust System
  • Exhaust manifold
  • Exhaust elbow, dry. 203 mm (8 in) on all Turbocharged engines and Turbocharged Aftercooled with wet exhaust. 152 mm (6 in) on Turbocharged Aftercooled with dry manifolds.

Flywheels & Flywheel Housings
  • SAE No. 0 flywheel
  • SAE No. 0 flywheel housing
  • SAE standard rotation

Fuel System
  • Fuel filter
  • Fuel transfer pump
  • Primary fuel filter
  • Fuel priming pump

  • Instrument panel, LH
  • Engine oil pressure gauge
  • Fuel pressure gauge
  • Water temperature gauge
  • Tachometer

Lube System
  • Crankcase breather, top mounted
  • Oil cooler
  • Oil filler in valve cover and dipstick, both RH
  • Lube oil filter
  • Rear sump oil pan

Mounting System
  • Supports

Power Take Off
  • Power take-off (PTO) 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)

Starting System
  • 24 volt, LH electric starting motor
  • Jacket water heater (6 kW, 240-480 volt)

  • Paint: Firepump Red
  • Vibration damper and guard
  • Lifting eyes