Cat® G3516 and G3516B Industrial Gas Engine. Ratings: 492-858 bkW (660-1150 bhp) @ 1200 rpm and 1000-1029 bkW (1340-1380 bhp) @ 1400 rpm are NSPS site compliant capable with customer-supplied aftertreatment. For specific emission information, please consult your local Cat Dealer.

Power Rating
Minimum Power 660 BHP
Maximum Power 1380 BHP
Frequency 1200-1400 rpm

Bore 170 mm (6.7 in)
Stroke 190 mm (7.5 in)
Displacement 69 L (4211 in³)
Aspiration Naturally Aspirated (NA), Turbocharged Aftercooled (TA)
Engine Configuration Engine - Continuous

Engine Dimensions - Approximate
Height 2286 mm (90 in)
Length 3400 mm (133 in)
Weight - Net Dry 8401 kg (18520 lb)
Width 1844 mm (73 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:- Lowest engine-out emissions- Highest fuel efficiency- Improved altitude and speed turndown- Stable load acceptance and load rejection

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

Air Inlet System
  • Axial flow air cleaners
  • Service indicator
  • Cleanable
Cooling System
  • Two-stage charge air cooling:
  • Engine cooling and charge air cooling thermostats
Exhaust System
  • Dry exhaust manifolds and turbocharger housings
Flywheels and Housings
  • SAE 00 flywheel
  • SAE 00 flywheel housing
  • SAE standard rotation
Fuel System
  • Electronic fuel metering valve
  • Requires 7-50 psig gas supply
  • Gas pressure regulator
  • Gas shutoff valve
  • Remote-mounted Advisor control panel
  • Interconnect harness
Lube System
  • Top-mounted crankcase breathers
  • Oil cooler
  • Oil filter and oil sampling valve
  • Drain valve
  • Turbo oil accumulator
  • API B16.3 approved gas/air-driven pre-lube system
Torsional Vibration Analysis
  • Caterpillar provided
  • Rails
Control Panels
  • 4" LCD Advisor display panel
  • Shipped loose
Starting System
  • 90 psi TDI starter
  • 150 psi TDI starter
Power Take-Offs
  • Front housing, two sided
  • Front lower LH accessory drive
Protection System — Display/Alarm/Shutdown
  • Low oil pressure
  • Oil filter differential pressure
  • High fuel or oil temperature
  • Engine oil to engine coolant
  • Differential temperature
  • High coolant temperature
  • Engine speed
  • Engine load
  • Battery voltage
  • Detonation
  • Manifold air temperature
  • Coolant JW inlet/outlet pressure
  • Left turbo inlet temperature
  • Right turbo inlet temperature
  • Cylinder port temperature
Protection System — Display Only
  • Service hours
  • Oxygen level
  • Paint — Cat yellow
  • Dual 23" vibration damper with guard
  • CSA Certification, Class 1 Division 2 Groups C and D

Optional Equipment

Air Inlet System
  • Rectangular air inlet adapter
  • Circular air inlet adapter
Charging System
  • Battery Charger 20 amp
  • Mechanical joint assembly
  • Inlet connection
Exhaust System
  • Flexible fittings available at first production build
  • Elbows and mufflers
  • Optional interconnect harness
Lube System
  • Shipped with lube oil
Mounting System
  • Rails
Power Take-Offs
  • Front stub shaft
  • Options available

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