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G3412Non-Current

G3412 Industrial Gas Engine

Overview

Cat® G3412 Industrial Gas Engine. Ratings: 448-475 bkW (600-637 bhp) @ 1800 rpm are NSPS site compliant capable with customer-supplied aftertreatment. Some ratings also have standard emission settings available for export only. For specific emission information, please consult your local Cat Dealer.

Specifications

Units: 
Bore 137 mm (5.4 in)
Stroke 152 mm (6.0 in)
Displacement 27 L (1649³)
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Benefits & Features

Emissions

Ratings are NSPS site compliant capable with customer-supplied aftertreatment. Some ratings also have standard emission settings available for export only. For specific emission information, please refer to the engine spec sheet.

Engine Design

    • Improved 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

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time

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  June 16, 2025

Specifications

Units: 
Power Rating
Minimum Power —
Maximum Power —
Frequency 1800 rpm
General
Bore 137 mm (5.4 in)
Stroke 152 mm (6.0 in)
Displacement 27 L (1649³)
Aspiration Turbocharged Aftercooled (TA)
Engine Configuration Engine - Continuous
Engine Dimensions - Approximate
Length 2442 mm (96 in)
Height 1960 mm (77 in)
Weight - Net Dry 2141 kg (4720 lb)
Width 1598 mm (63 in)

Benefits & Features

Emissions

Ratings are NSPS site compliant capable with customer-supplied aftertreatment. Some ratings also have standard emission settings available for export only. For specific emission information, please refer to the engine spec sheet.

Engine Design

    • Improved 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

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
    • Air cleaner — single element with service indicator
  • Control System
    • Governor — Woodward PSG mechanica
    • Governor control — positive locking
  • Cooling System
    • Thermostats and housing
    • Jacket water pump
    • Aftercooler water pump
    • Aftercooler core
  • Exhaust System
    • Watercooled exhaust manifolds
    • Dry exhaust elbow
  • Flywheel & Flywheel Housing
    • SAE No. 0 flywheel
    • SAE No. 0 flywheel housing
    • SAE standard rotation
  • Fuel System
    • Gas pressure regulator
    • Natural gas carburetor
  • Ignition System
    • Digital ignition system
  • Instrumentation
    • Service meter
  • Lube System
    • Crankcase breather — top mounted
    • Oil cooler
    • Oil filter — RH
    • Auxiliary oil reservoir
    • Rear sump oil pan
    • Oil filler in valve cover and dipstick — RH
  • Mounting System
    • Engine supports
  • Protection System
    • Shutoff
  • General
    • Paint — Cat yellow
    • Crankshaft vibration damper and drive pulleys
    • Lifting eyes

Optional Equipment

  • Air Inlet System
    • Air cleaner
    • Air inlet adapter
    • Precleaner
    • Air cleaner rain cap
  • Charging System
    • Battery chargers
    • Charging alternators
    • Ammeter gauge
    • Ammeter gauge and wiring
    • Control mounting
  • Control System
    • EG3P/2301A speed control governor
    • PSG electric governor
    • PSG pneumatic governor
  • Cooling System
    • Radiators
    • Blower fan and fan drives for customer suppliedradiators
    • ATAAC conversion
    • Aftercooler
    • Expansion tank
    • Heat exchanger
  • Exhaust System
    • Flexible fittings
    • Elbows
    • Flanges
    • Rain caps
    • Mufflers
  • Fuel System
    • Dual gas regulator
    • Low energy fuel carburetor
    • Low pressure gas conversion
    • Propane and natural gas valve and jet kits
    • Fuel filter
  • Ignition System
    • CSA ignition
    • Ignition ground wiring harness
    • Power supply — digital ignition system
  • Instrumentation
    • Alarm module
    • Gauges and instrument panels
  • Lube System
    • Auxiliary oil reservoir removal
    • Lubricating oil
  • Mounting System
    • Vibration isolators
  • Power Take-Offs
    • Auxiliary drive pulleys
    • Enclosed clutch
    • Clutch support
    • Front stub shaft
    • Flywheel stub shaft
    • Pulley removal
  • Protection System
    • Gas valves
    • Status control box interconnect wiring harness
  • Starting System
    • Air starting motor
    • Electric air start control
    • Air pressure regulator
    • Air silencer
    • Electric starting motors — single 24-volt
    • Starting aids
    • Battery sets (24-volt dry), cables, and rack
  • General
    • Tool set
    • Digital diagnostic tool

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