Cat® G3508 Industrial Gas Engine

Cat® G3508 Industrial Gas Engine

Cat® G3508 Industrial Gas Engine. Ratings: 391 bkW (524 bhp) @ 1200 rpm and 500-514 bkW (670-690 bhp) @ 1400 rpm are NSPS site compliant capable with customer-supplied ...


170 mm (6.7 in)
190 mm (7.5 in)
34.5 L (2105 in³)
Engine Configuration
Engine - Continuous
Turbocharged Aftercooled (TA)

Power Rating

Minimum Power
Maximum Power
1200-1400 rpm

Engine Dimensions - Approximate

2522 mm (99 in)
2131 mm (84 in)
Weight - Net Dry
3941 kg (8688 lb)
2014 mm (79 in)


Ratings are NSPS site compliant capable with customer-supplied aftertreatment. For specific emission information, please consult your local Cat Dealer.

Engine Design

  • Proven reliability and durability
  • Ability to burn a wide spectrum of gaseous fuels
  • Robust diesel strength design prolongs life and lowers owning and operating costs
  • Broad operating speed range

Advanced Digital Engine Management

ADEM A3 control system providing integrated ignition, speed governing, protection, and controls, including detonation-sensitive variable ignition timing. ADEM A3 has improved: user interface, display system, shutdown controls, and system diagnostics.

Lean Burn Engine Technology

Lean-burn engines operate with large amounts of excess air. The excess air absorbs heat during combustion reducing the combustion temperature and pressure, greatly reducing levels of NOx. Lean-burn design also provides longer component life and excellent fuel consumption.

Ease of Operation

Side covers on block allow for inspection of internal components

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time


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 CatIndustrial Service Distributor (ISD) program

Standard Equipment:

Optional Equipment:

    Air Inlet System
    • Remote air inlet adapters
    • Remote air inlet adapters
    Charging System
    • Battery chargers
    • Battery chargers
    Cooling System
    • Jacket water thermostats and housing — full opentemperature 98°C (208°F)
    • Aftercooler core
    • Jacket water pump — gear driven, centrifugal,non-self-priming
    • Thermostatic valves
    • Connections
    • Aftercooler water pump — gear driven, centrifugal,non-self-priming
    • Expansion and overflow tank
    • Aftercooler core for sea-air atmosphere
    • Water level switch gauge
    • Aftercooler thermostats and housing — full opentemperature 35°C (95°F)
    • Aftercooler — raw water, cleanable
    European Certifications
    • European Union certifications
    Exhaust System
    • Exhaust manifolds — watercooled
    • Flexible fittings
    • Elbows
    • Flanges
    • Flange and exhaust expanders
    • Mufflers
    Fuel System
    • Gas pressure regulator
    • Fuel filter
    • Natural gas carburetor
    • Fuel gas shut-off valve (24V DC)
    • Customer communication modules
    • Advisor panel
    • Advisor interconnect harness
    Lubrication System
    • Oil filters — duplex
    • Oil pan drain
    • Crankcase breathers — top mounted
    • Oil level regulator
    • Sump pumps
    • Oil cooler
    • Lubricating oil
    • Oil filter — RH
    • Oil pan — shallow
    • Oil sampling valve
    • Turbo oil accumulator
    Mounting System
    • Rails
    • Vibration isolators
    • Rails, engine mounting
    Starting System
    • Air pressure regulator
    • Air silencer
    • JW heaters
    • Battery sets (24-volt dry)
    • Battery accessories