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G3508/G3508BNon-Current

G3508/G3508B Industrial Gas Engine

Overview

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 aftertreatment. For specific emission information, please consult your local Cat Dealer.

Specifications

Units: 
Bore 170 mm (6.7 in)
Stroke 190 mm (7.5 in)
Displacement 34.5 L (2105 in³)
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Benefits & Features

Emissions

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.

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  April 16, 2024

Specifications

Units: 
Power Rating
Minimum Power —
Maximum Power —
Frequency 1200-1400 rpm
General
Bore 170 mm (6.7 in)
Stroke 190 mm (7.5 in)
Displacement 34.5 L (2105 in³)
Aspiration Turbocharged Aftercooled (TA)
Engine Configuration Engine - Continuous
Engine Dimensions - Approximate
Weight - Net Dry 3941 kg (8688 lb)
Length 2522 mm (99 in)
Height 2131 mm (84 in)
Width 2014 mm (79 in)

Benefits & Features

Emissions

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

Quality

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

  • Air Inlet System
    • Remote air inlet adapters
  • Charging System
    • Battery chargers
  • Cooling System
    • Jacket water thermostats and housing — full opentemperature 98°C (208°F)
    • Jacket water pump — gear driven, centrifugal,non-self-priming
    • Aftercooler water pump — gear driven, centrifugal,non-self-priming
    • Aftercooler core for sea-air atmosphere
    • Aftercooler thermostats and housing — full opentemperature 35°C (95°F)
    • Aftercooler — raw water, cleanable
  • Exhaust System
    • Exhaust manifolds — watercooled
  • Flywheels & Flywheel Housings
    • SAE No. 00 flywheel
    • SAE No. 00 flywheel housing
    • SAE standard rotation
  • Fuel System
    • Gas pressure regulator
    • Natural gas carburetor
    • Fuel gas shut-off valve (24V DC)
  • Instrumentation
    • Advisor panel
    • Advisor interconnect harness
  • Lubrication System
    • Crankcase breathers — top mounted
    • Oil cooler
    • Oil filter — RH
    • Oil pan — shallow
    • Oil sampling valve
    • Turbo oil accumulator
  • Mounting System
    • Rails, engine mounting
  • Power Take-Offs
    • Front housing — two-sided
    • Front lower LH accessory drive
  • Protection System
    • Electronic shutoff system
    • Gas shutoff valve
  • General
    • Paint — Cat yellow
    • Vibration damper and guard

Optional Equipment

  • Air Inlet System
    • Remote air inlet adapters
  • Charging System
    • Battery chargers
  • Cooling System
    • Aftercooler core
    • Thermostatic valves
    • Connections
    • Expansion and overflow tank
    • Water level switch gauge
  • European Certifications
    • European Union certifications
  • Exhaust System
    • Flexible fittings
    • Elbows
    • Flanges
    • Flange and exhaust expanders
    • Mufflers
  • Fuel System
    • Fuel filter
  • Instrumentation
    • Customer communication modules
  • Lubrication System
    • Oil filters — duplex
    • Oil pan drain
    • Oil level regulator
    • Sump pumps
    • Lubricating oil
  • Mounting System
    • Rails
    • Vibration isolators
  • Power Take-Offs
    • Auxiliary drive shaft
    • Auxiliary drive pulleys
    • Front stub shaft
    • Pulleys
  • Protection System
    • Gas valve
    • Explosion relief valves
  • Starting System
    • Air pressure regulator
    • Air silencer
    • JW heaters
    • Battery sets (24-volt dry)
    • Battery accessories
  • General
    • Flywheel guard removal
    • Engine barring group
    • Premium 8:1 pistons

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