G3516J Gas Engine

  • Overview
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Engine Design

 - Proven 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


Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2010

Lean Burn Engine Technology

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.

Advanced Digital Engine Management

ADEM A3 control system providing integrated ignition, speed governing, protection, and controls, including detonation-sensitive variable ignition timing. ADEM A3 has improved: user interface, display system, shutdown controls, and system diagnostics.

Ease of Operation

Side covers on block allow for inspection of internal components

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time


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

Gas Engine Rating Pro

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.

Product Support Offered Through Global Cat Dealer

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 optionsS•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 60 Years of Gas Engine Manufacturing Experience

Over 60 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

Engine Specifications
Emissions U.S. EPA Spark Ignited Stationary NSPS emissions
Minimum Rating 1029 bkW (1380 BHP)
Maximum Rating 1029 bkW (1380 BHP)
Displacement 69 l (4211 inu00b3)
Aspiration Turbocharged-2 Stage aftercooled
Oil Change Interval 1000 hrs
Stroke 190 mm (7.5 in)
Bore 170 mm (6.7 in)
Combustion Lean Burn
Governor Electronic (ADEM A3)
Lube Oil System 423 L (112 gal)

Standard Equipment

  • Air Inlet System
    • Axial flow air cleaners
    • Single element canister type with service indicator
  • Cooling System
    • Two-stage charge air cooling system
    • Engine cooling and charge air cooling thermostats
  • Exhaust System
    • Watercooled exhaust manifolds
    • Dry Turbocharger housings
    • Water-cooled exhaust elbow
  • Flywheels & Flywheel Housings
    • SAE No. 00 flywheel housing
    • SAE standard rotation
    • SAE No. 21 Flywheel
  • Fuel System
    • 7-40 psig gas supply
    • Electronic fuel metering valve
    • Gas pressure regulator
    • Gas shutoff valve
    • Fuel System
  • Instrumentation
    • Remote-mounted Advisor control panel
    • Interconnect harness
  • Lubrication System
    • Crankcase breather — top mounted
    • Oil cooler
    • Oil filter — RH
    • Oil pan — shallow
    • Oil sampling valve
    • Turbo oil accumulator
  • Mounting System
    • Rails
  • Protection System
    • Electronic shutoff system
    • Gas shutoff valve
  • General
    • Paint — Cat yellow
    • Crankshaft vibration damper and guard
  • Power Take Offs
    • Front lower LH accessory drive
    • Front housing, two sided

Optional Equipment

  • Air Inlet System
    • Remote air inlet adapters
    • Rain Shield
  • Charging System
    • CSA Alternator (24V, 65A)
  • Exhaust System
    • Flexible fittings
    • Elbows
    • Flange
    • Mufflers
  • Fuel System
    • Fuel filter
  • Lubrication System
    • Oil bypass filter
    • Deep sump oil pan
    • Air prelube pump
    • Lubricating oil
    • Oil pan drain
  • Power Take-Offs
    • Front stub shaft
  • Protection System
    • Explosion relief valves, status control box interconnect wiring harness
  • Starting System
    • 90 psi starter
    • 150 psi starter
  • EU Certification
    • EEC DOI certification

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