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Minimum Rating3750 BHP (2796 bkW)
Maximum Rating4000 BHP (2983 bkW)
EmissionsNSPS Site Compliant Capable
Displacement15528 in³ (254 l)
G3600 A4 engines provide a wide range of power options to fit your gas compression application. G3600 A4 engines bring the highest uptime in the industry and long operating intervals between overhaul. Operators that use G3600 A4 engines in their fleet enjoy virtually no unscheduled downtime, the right power for their application, the lowest operating costs, and emissions compliance. Ideal applications for G3600 A4 engines include centralized gathering stations, gas processing, transmissions, and storage applications. Cat G3612 A4 gas engine with ratings: 2796-2983 bkW (3750-4000 bhp) @ 1000 rpm. NSPS site compliant capable.


Minimum Rating3750 BHP (2796 bkW)
Maximum Rating4000 BHP (2983 bkW)
EmissionsNSPS Site Compliant Capable
Displacement15528 in³ (254 l)
Compression Ratio9.2:1
Rotation from Flywheel EndCounterclockwise
Flywheel Teeth255
Weight - Dry58500 lb (26535 kg)
Cooling System194 gal (US) (734 l)
Lube Oil System - Refill272 gal (US) (1030 l)
Oil Change Interval5000 hours
Ignition, ProtectionADEM™ A4
Stroke11.8 in (300 mm)
Bore11.8 in (300 mm)

Benefits and Features

Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2010 with the use of an oxidation catalyst

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.

- Side covers on block allow for inspection of internal components

ADEM A4 engine management system integrates speed control, air/fuel ratio control, and ignition/detonation controls into a complete engine management system. ADEM A4 has improved: user interface, display system, shutdown controls, and system diagnostics.

Large variety of factory-installed engine attachments reduces packaging time.

Every engine is full-load tested to ensure proper engine performance.

GERP is a web-based program designed to provide site performance capabilities for Cat® natural gas engines for the gas compression industry. GERP provides engine data for your site's altitude, ambient temperature, fuel, engine coolant heat rejection, performance data, installation drawings, spec sheets, and pump curves.

More than 2,200 dealer outlets Cat factory-trained dealer technicians service every aspect of your petroleum engine Cat parts and labor warranty Preventive maintenance agreements available for repairbefore-failure options S•O•SSM program matches your oil and coolant samples against Caterpillar set standards to determine: - Internal engine component condition - Presence of unwanted fluids - Presence of combustion by-products - Site-specific oil change interval

Over 80 years of natural gas engine production Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products - Cast engine blocks, heads, cylinder liners, and flywheel housings - Machine critical components - Assemble complete engine

For all your petroleum power requirements, visit www.catoilandgasinfo.com.

For all your petroleum power requirements, visit www.catoilandgasinfo.com.

Standard Equipment

  • Air cleaner — standard duty Inlet air adapter
  • A4 control system — provides electronic governing integrated with air/fuel ratio control and individual cylinder ignition timing control
  • Jacket water pump
  • Jacket water thermostats and housing
  • Aftercooler pump
  • Aftercooler water thermostats and housing
  • Two-stage aftercooler
  • Dry wrapped exhaust manifolds
  • Vertical outlet adapter
  • SAE standard rotation
  • Gas admission valves -- electronically controlled fuel supply pressure
  • A4 control system — senses individual cylinder detonation and controls individual cylinder timing
  • Crankcase breathers — top mounted
  • Oil cooler
  • Oil filter
  • Oil pan drain valve
  • Engine mounting feet (six total)
  • Electronic shutoff system with purge cycle
  • Crankcase explosion relief valves
  • Gas shutoff valve
  • Air starting system
  • Paint — Cat yellow
  • Vibration dampers

Optional Equipment

  • Heavy-duty air cleaner with precleaners and rain protection
  • 35 Amp & 65 Amp chargin alternators - CSA approved
  • Flexible bellows adapters
  • Exhaust expander
  • Weld flanges
  • Fuel filter
  • Gas pressure regulator
  • Flexible connection
  • Low energy fuel system
  • Corrosive gas fuel system
  • Remote data monitoring and speed control
  • Compatible with Cat Electronic Technician (ET) and Data View
  • LCD display panel
  • Color HMI display
  • Modbus and Ethernet capable
  • Air or electric motor-driven prelube
  • Duplex oil filter
  • RH service
  • Lube oil makeup system
  • Mounting plates (set of six)
  • Front stub shafts
  • Air pressure reducing valve
  • Natural gas starting system
  • Engine barring device
  • Damper guard