G3412 Gas Generator Set

Using natural gas for combined heat and power (CHP) systems and emergency power for facilities, to renewable biogas energy to support the local grid, or electricity generated from coal mine gases, Caterpillar has a wide range of reliable gas power solutions.


G3412 Natrual Gas Engine

  • Robust high speed block design provides prolonged life and lower owning operationg costs
  • Designed for maximum performance on low pressure pipeline natural gas
  • Simple open chamber combustion system for reliability and fuel flexibility
  • Leading edge technology in ignition system and air/fuel ratio control for lower emission and engine efficiency
  • One electronic control module handles all engine functions: ignition, governing, air/fuel ratio control and engine protection

SR4B Generator

  • Designed to match performance and output characteristics of Caterpillar gas engines
  • Industry leading mechanical and electrical design
  • High efficiency

EMCP4.2 Control Panel

  • User-friendly interface and navigation
  • Scalable system to meet a wide range of installation requirement
  • Expansion modules and site-specific programming for specific customer requirements

Cooling System

  • Designed to operate in standard ambient temperatures up to 43°C (110°F)Contact your Cat Dealer for specific ambient and altitude capabilities


  • Meets most worldwide emissions requirements down to 0.5 g/bhp-hr NOx level without aftertreatment

Full Range of Attachments

  • Wide range of bolt-on system expansion attachments
  • Factory designed and tested
  • Flexible packaging options for easy and cost effective installation

Proven System

  • Field proven in a wide range of applications worldwide
  • Fully prototype tested
  • Certified torsional vibration analysis available

Worldwide Product Support

  • Cat dealers have over 1,800 dealer branch stores operating in 200 countries
  • Your local Cat dealer provides extensive post-sale support, including maintenance and repair agreements

Additional information

Offering Type

Generator Set Specifications - Continuous Rating

423 ekW @0.8pf

Generator Set Specifications - Fuel Type

Natural Gas, Biogas, Field Gas, Propane

Generator Set Specifications - Maximum Electrical Efficiency


Generator Set Specifications - Maximum Standby Rating

500 ekW @ 0.8pf

Generator Set Specifications - Frequency

50 or 60 Hz

Generator Set Specifications - RPM

1500 or 1800 rpm

Engine Specifications - Engine Model


Engine Specifications - Displacement

27 l ( 1649 in³ )

Engine Specifications - Aspiration


Engine Specifications - Bore

137 mm ( 5.4 in )

Engine Specifications - Stroke

152 mm ( 6 in )

Generator Set Dimensions - Length

4542 mm ( 179 in )

Generator Set Dimensions - Width

2238 mm ( 88 in )

Generator Set Dimensions - Height

2189 mm ( 86 in )

Generator Set Dimensions - Dry Weight - Genset

4384 kg ( 9664 lb )

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