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Gas Engines

Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® G3408 Industrial Gas Engine

Cat® G3408 Industrial Gas Engine. Ratings: 190-317 bkW (255-425 bhp) @ 1800 rpm and 249 bkW (332 bhp) @ 1500 rpm are 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.

Product Details

General

Bore 137 mm (5.4 in)
Stroke 152 mm (6.0 in)
Displacement 18 L (1099 in³)
Aspiration Naturally Aspirated (NA), Turbocharged Aftercooled (TA)
Engine Configuration Engine - Continuous

Power Rating

Minimum Power 190 bkW
Maximum Power 317 bkW
Frequency 1500 & 1800 rpm

Engine Dimensions (Approximate. Final dimensions dependent on selected options)

Weight, Net Dry 2245 kg (4950 lb)
Height 1758 mm (69.2 in)
Width 1563 mm (61.5 in)
Length 1756 mm (69.1 in)
  • Air Inlet System
    •  Air cleaner — single element with service indicator
  • Air cleaner — single element with service indicator
    • Control System
      •  Governor — Woodward PSG mechanical
      •  Governor control — positive locking
    • Cooling System
      •  Thermostats and housing
      •  Jacket water pump
      •  Aftercooler water pump
      •  Aftercooler core
    • Exhaust System
      •  Watercooled exhaust manifolds
      •  Dry exhaust elbow
    • Watercooled exhaust manifolds
      • Dry exhaust elbow
        • Flywheel & Flywheel Housing
          •  SAE No. 0 flywheel
          •  SAE No. 0 flywheel housing
          •  SAE standard rotation
        • Fuel System
          •  Gas pressure regulator
          •  Natural gas carburetor
        • Ignition System
          •  Digital ignition system
        • Instrumentation
          •  Service meter
        • Lube System
          •  Crankcase breather — top mounted
          •  Oil cooler
          •  Oil filter — RH
          •  Auxiliary oil reservoir
          •  Rear sump oil pan
          •  Oil filler in valve cover and dipstick — RH
        • Crankcase breather — top mounted
          • Oil cooler
            • Oil filter — RH
              • Auxiliary oil reservoir
                • Rear sump oil pan
                  • Oil filler in valve cover and dipstick — RH
                    • Mounting System
                      •  Engine supports
                    • Protection System
                      •  Shutoffs
                    • General
                      •  Paint — Cat yellow
                      •  Crankshaft vibration damper and drive pulleys
                      •  Lifting eyes
                    • Air Inlet System
                      •  Air cleaner — dual element
                      •  Air inlet adapter
                      •  Precleaner
                      •  Air cleaner rain cap
                    • Charging System
                      •  Battery chargers
                      •  Charging alternators
                      •  Ammeter gauge
                      •  Ammeter gauge and wiring
                      •  Control mounting
                    • Battery chargers
                      • Charging alternators
                        • Ammeter gauge
                          • Ammeter gauge and wiring
                            • Control mounting
                              • Control System
                                •  EG3P/2301A speed control governor
                                •  PSG electric governor
                                •  PSG pneumatic governor
                              • EG3P/2301A speed control governor
                                • PSG electric governor
                                  • PSG pneumatic governor
                                    • Cooling System
                                      •  Radiators
                                      •  Non-sparking blower fan
                                      •  Blower fan and fan drives for customer suppliedradiators
                                      •  ATAAC conversion
                                      •  Aftercooler
                                      •  Expansion tank
                                      •  Heat exchanger
                                    • Radiators
                                      • Non-sparking blower fan
                                        • Blower fan and fan drives for customer suppliedradiators
                                          • ATAAC conversion
                                            • Aftercooler
                                              • Expansion tank
                                                • Heat exchanger
                                                  • Exhaust System
                                                    •  Flexible fittings
                                                    •  Elbows
                                                    •  Flanges
                                                    •  Rain caps
                                                    •  Mufflers
                                                    •  Exhaust manifold
                                                  • Flexible fittings
                                                    • Elbows
                                                      • Flanges
                                                        • Rain caps
                                                          • Mufflers
                                                            • Exhaust manifold
                                                              • Fuel System
                                                                •  Dual gas regulator
                                                                •  Low energy fuel carburetor
                                                                •  Low pressure gas conversion
                                                                •  Propane and natural gas valve and jet kits
                                                                •  Fuel filter
                                                              • Ignition System
                                                                •  CSA ignition
                                                                •  Ignition ground wiring harness
                                                                •  Power supply — digital ignition system
                                                              • Instrumentation
                                                                •  Gauges and instrument panels
                                                              • Gauges and instrument panels
                                                                • Lube System
                                                                  •  Auxiliary oil reservoir removal
                                                                  •  Lubricating oil
                                                                • Mounting System
                                                                  •  Vibration isolators
                                                                • Vibration isolators
                                                                  • Power Take-Offs
                                                                    •  Auxiliary drive pulleys
                                                                    •  Enclosed clutch
                                                                    •  Clutch support
                                                                    •  Front stub shaf
                                                                    •  Flywheel stub shaft
                                                                    •  Pulley removal
                                                                  • Auxiliary drive pulleys
                                                                    • Enclosed clutch
                                                                      • Clutch support
                                                                        • Front stub shaf
                                                                          • Flywheel stub shaft
                                                                            • Pulley removal
                                                                              • Protection System
                                                                                •  Gas valves
                                                                              • Starting System
                                                                                •  Air starting motor
                                                                                •  Electric air start control
                                                                                •  Air pressure regulator
                                                                                •  Air silencer
                                                                                •  Electric starting motor — single 24-volt
                                                                                •  Starting aids
                                                                                •  Battery sets (24-volt dry), cables, and rack
                                                                              Built for it