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Overview

The Cat® G3412 Industrial Gas Engine is offered in ratings ranging from 448-475 bkW (600-637 bhp) @ 1800 rpm. These 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 consult your local Cat Dealer.

Power Rating

Units:
Minimum Power 600.0 bhp 448.0 bkW Less
Maximum Power 637.0 bhp 475.0 bkW Less
Frequency 1800 rpm 1800 rpm Less

General

Bore 137 mm (5.4 in) 137 mm (5.4 in) Less
Stroke 152 mm (6.0 in) 152 mm (6.0 in) Less
Displacement 27 L (1649³) 27 L (1649³) Less
Aspiration Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA) Less
Engine Configuration Engine - Continuous Engine - Continuous Less

Engine Dimensions (Approximate. Final dimensions dependent on selected options)

Weight, Net Dry 2141 kg (4720 lb) 2141 kg (4720 lb) Less
Height 1960 mm (77 in) 1960 mm (77 in) Less
Width 1598 mm (63 in) 1598 mm (63 in) Less
Length 2442 mm (96 in) 2442 mm (96 in) Less

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

G3412 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

G3412 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

Cat® Dealer Service

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