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Cat 3508 Diesel Fire Pump Engine. Ratings: 709-794 bkW (950-1065 bhp) @ 1460-1750 rpm are non-certified, not FM Approved, and not UL Listed. They are available for global non-regulated areas.

Engine Specifications

Minimum Rating 950.0 bhp 709.0 bkW Less
Maximum Rating 1065.0 bhp 795.0 bkW Less
Emissions Non-certified Non-certified Less
Bore 6.7 in 170.0 mm Less
Stroke 7.5 in 190.0 mm Less
Displacement 2105.0 in3 34.5 L Less
Aspiration Turbocharged Aftercooled Turbocharged Aftercooled Less
Engine Weight, net dry 11806.0 lb 5355.0 kg 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) 30.0 gal 114.0 L Less
Cooling System (engine only) 60.0 gal 227.0 L Less


Length 92.5 in 2350.0 mm Less
Width 68.7 in 1744.0 mm Less
Height 74.9 in 1902.0 mm Less


Non-certified for U.S. EPA stationary emergency fire engines. Available for global non-regulated areas. Not FM Approved. Not UL Listed.

Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.


Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including S•O•SSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program

3508 Standard Equipment

Air Inlet System
  • Air cleaner. Regular duty, dry, panel type with service indicators, turbocharger, jacket water aftercooled.
  • Turbocharger, rear mounted
  • Jacket water aftercooled

Control System
  • Charging alternator 24 volt, 35 amp
  • Governor, RH, 3161 with self contained synthetic oil sump
  • Air-fuel ratio control
  • Mechanical speed control, without torque control
  • Governor control
  • Positive locking

Cooling System
  • Thermostats and housing
  • Jacket water pump, centrifugal

Exhaust System
  • Exhaust manifold, dry

Flywheels and Flywheel Housing
  • SAE No. 0 flywheel
  • 151 flywheel teeth
  • SAE No. 0 flywheel housing
  • SAE standard rotation

Fuel System
  • Fuel filter, with service indicators, cartridge type with RH service
  • Fuel transfer pump

  • Instrument Panel, RH
  • Engine oil pressure gauge
  • Fuel pressure gauge
  • Oil filter differential gauge
  • Jacket water temperature gauge
  • Service meter, electric
  • Tachometer

Lube System
  • Crankcase breather, top mounted
  • Oil cooler
  • Oil filler
  • Oil dipstick
  • Oil pump
  • Oil filter, cartridge type with RH service
  • Shallow oil pan
  • Fumes disposal (not installed)

Mounting System
  • Rails, mounting, engine length, 254 mm (10 in), industrial-type, C-channel.
  • Included on selected top level engines

Power Take Off
  • Accessory drive, upper RH
  • Front housing, single sided

Protection System
  • Junction box
  • Manual shutoff, RH
  • Safety shutoff protection, energized to shutdown
  • Low oil pressure, low idle 69 kPa (10 psi); high idle 207 kPa (30 psi)
  • Water temperature
  • Overspeed
  • 3161 governor solenoid energized to shutdown

Starting System
  • Starting switch

  • Vibration damper
  • Lifting eyes
  • Paint: Caterpillar yellow, with optional colors available at request

3508 Optional Equipment

Cooling System
  • Emergency water connections

Exhaust System
  • Flexible fitting
  • Exhaust elbow
  • Exhaust flange

Fuel System
  • Primary fuel filter - cartridge type

Lubrication System
  • Oil level regulator

Power Take-off
  • Two-sided front housing
  • Front, upper left-hand accessory drive
  • Front, lower left-hand accessory drive
  • Auxiliary drive shaft
  • Auxiliary drive pulley

Starting System
  • Battery - 24V
  • Battery rack

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