Cat® G3512, G3512B Industrial Gas Engine

Cat® G3512, G3512B Industrial Gas Engine

Cat® G3512 and G3512B Industrial Gas Engines. Ratings: 589-642 bkW (790-860 bhp) @ 1200 rpm and 749-772 bkW (1004-1035 bhp) @ 1400 rpm are NSPS site compliant capable ...


170 mm (6.7 in)
190 mm (7.5 in)
51.8 L (3158 in³)
Engine Configuration
Engine - Continuous
Turbocharged Aftercooled (TA)

Power Rating

Minimum Power
Maximum Power
1200-1400 rpm

Engine Dimensions - Approximate

3023 mm (119 in)
2136 mm (84.1 in)
Weight - Net Dry
4950 kg (10913 lb)
2220 mm (87.4 in)


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

Engine Design

  • Built on G3500 LE proven reliability and durability
  • Ability to burn a wide spectrum of gaseous fuels
  • Robust diesel strength design prolongs life and lowersowning and operating costs
  • Broad operating speed range at lower site air densities(high altitude/hot ambient temperatures)
  • Higher power density improves fleet management
  • Quality engine diagnostics
  • Detonation-sensitive timing control for individualcylinders

Ultra Lean Burn Technology (ULB)

ULB technology uses an advanced control system, abetter turbo match, improved air and fuel mixing, and amore sophisticated combustion recipe to provide:- Lower environmental impact- Higher return on investment- Lower operating costs- Higher work force efficiency

Advanced Digital Engine Management

ADEM A3 engine management system integrates speedcontrol, air/fuel ratio control, and ignition/detonationcontrols into a complete engine management system.ADEM A3 has improved: user interface, display system,shutdown controls, and system diagnostics.

Full Range of Attachments

Large variety of factory-installed engine attachmentsreduces 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
    • Round air inlet adaptors
    • Axial flow air cleaner
    • Cleanable
    • Single element canister type with service indicator
    Charging System
    • Battery chargers
    • CSA certified version available with
    Fuel System
    • Gas filter
    • 7-50 psi gas supply
    • Electronic fuel metering valve
    • Gas pressure regulator, pivot valve operated
    • Advisor display panel
    • Communications module
    Power Take-offs
    • Front stub shaft
    • Pulleys
    • Front housing — two-sided
    • Front lower — LH accessory drive
    Eu Certification
    • EEC DOI certification
    • Factory commissioning