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Gas Compression Engines

Oil and gas producers have relied on Caterpillar since the industry's earliest days. For 60 years, we've powered the petroleum business on land. Now we go with it onto the ocean, hundred of miles out, thousands of feet down.

G3408 Gas Compression Engine

Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3408 engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3408 engines include gas lift, gas gathering, and wellhead gas compression. Cat G3408 gas engine. Ratings: 190-298 bkW (255-400 bhp) @ 1800 rpm are NSPS site compliant capable with customer-provided air-fuel ratio control and aftertreatment or available for non-regulated areas.

Product Details

Engine Specifications

Minimum Rating 190 bkW
Maximum Rating 298 bkW
Emissions NSPS Site Compliant Capable or non-regulated
Displacement 18 L
Compression Ratio 9.7:1
Aspiration Naturally Aspirated or Turbocharged-Aftercooled
Rotation (from flywheel end) Counterclockwise
Flywheel and Flywheel Housing SAE No. 0
Flywheel Teeth 136
Weight (dry) 1678 kg
Oil Change Interval 750 hours
Ignition, Protection Altronic III
Stroke 152 mm
Bore 137 mm

Capacity for Liquids

Cooling System 54.9 L
Lube Oil System (refill) 46.2 L
  • Air Inlet System
    •  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
  • Flywheel & Flywheel Housing
    •  SAE No. 0 flywheel
    •  SAE No. 0 flywheel housing
    •  SAE standard rotation
  • 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
        • 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
                      • Engine supports
                        • Protection System
                          •  Shutoffs
                        • Shutoffs
                          • General
                            •  Paint — Cat yellow
                            •  Crankshaft vibration damper and drive pulleys
                            •  Lifting eyes
                          • 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
                                • 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
                                      • Exhaust System
                                        •  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
                                      • 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
                                                • Lube System
                                                  •  Auxiliary oil reservoir removal
                                                  •  Lubricating oil
                                                • Auxiliary oil reservoir removal
                                                  • Lubricating oil
                                                    • Mounting System
                                                      •  Vibration isolators
                                                    • Power Take-Offs
                                                      •  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
                                                    • 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