Gas Engines

Cat Cat® G3304 Industrial Gas Engine

Bore 121 mm (4.75 in)

Stroke 152 mm (6.0 in)

Displacement 7.0 L (425 in³)

The Cat® G3304 Industrial Gas Engine is offered in the following rating: 71 bkW (95 bhp) @ 1800 rpm. This rating is NSPS site compliant capable with customer-supplied aftertreatment. Some ratings also have standard emission settings available for export only. For specific emission information, please consult your local Cat Dealer.

Engine Design

Proven reliability and durability Ability to burn a wide spectrum of gaseous fuels Robust diesel strength design prolongs life and…

  • 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
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Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time

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

Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.
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World-class Product Support Offered Through Global Cat Dealer Network

Scheduled maintenance, including SOSSM sample Customer Support Agreements (CSA) Caterpillar Extended Service Coverage (ESC) Supe…

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program
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World-class Product Support Offered Through Global Cat Dealer Network

Scheduled maintenance, including SOSSM sample Customer Support Agreements (CSA) Caterpillar Extended Service Coverage (ESC) Supe…

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program
MORE DETAILS

Standard Equipment

Air Inlet System
  • Air cleaner
  • Air cleaner rain cap
  • Service indicator
Control System
  • Hydra-mechanical governor
Cooling System
  • Thermostats and housing
  • Jacket water pump — gear-driven
Exhaust System
  • Watercooled exhaust manifolds
  • Dry exhaust elbow
Flywheel & Flywheel Housing
  • SAE No. 1 flywheel
  • SAE No. 1 flywheel housing
  • SAE standard rotation
Fuel System
  • Gas pressure regulator
  • Natural gas carburetor
Ignition System
  • Altronic V ignition system
Instrumentation
  • Service meter
Lube System
  • Crankcase breather — top mounted
  • Oil cooler
  • Oil pan — full sump
  • Oil filler and dipstick
Mounting System
  • Engine supports
Protection System
  • Shutoffs
General
  • Paint — Cat yellow
  • Crankshaft drive pulley
  • Lifting eyes
Charging System
  • Battery chargers
  • Charging alternators
  • Ammeter gauge
  • Ammeter gauge and wiring
Control System
  • Vernier and positive locking control
Cooling System
  • Expansion tank
  • Heat exchanger/expansion tank
  • Radiator
  • Blower fan
  • Suction fan
  • Belt tightener
  • Fan drive
Exhaust System
  • Flexible fittings
  • Elbows
  • Flange
  • Pipe
  • Rain cap
  • Mufflers
Ignition System
  • Altronic III
  • CSA shielded ignition
  • Wiring harness
Instrumentation
  • Gauges and instrument panels
Lube System
  • Lubricating oil
Mounting System
  • Vibration isolators
Power Take-Offs
  • Auxiliary drive pulleys
  • Auxiliary pump
  • Enclosed clutch
  • Flywheel stub shaft
  • Front stub shaft
Protection System
  • Mechanical shutoffs
  • Gas valves
Starting System
  • Air starting motor
  • Air pressure regulator
  • Air silencer
  • Electric starting motor
  • Battery sets
  • Battery cables
  • Battery rack
General
  • Tool set

Technical Specifications

  • Power Rating
    Minimum Power 95 HP
    Maximum Power 95 HP
    Frequency 1800 rpm
  • Bore 121 mm (4.75 in)
    Stroke 152 mm (6.0 in)
    Displacement 7.0 L (425 in³)
    Engine Configuration Engine - Continuous
    Aspiration Naturally Aspirated (NA)
  • Weight - Net Dry 757 kg (1670 lb)
    Width 744 mm (29 in)
    Height 1170 mm (46 in)
    Length 1158 mm (46 in)

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