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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.

G3406 Gas Compression Engine

Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3406 engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime. Ideal applications for G3406 engines include gas lift, gas gathering, and wellhead gas compression. Cat G3406 gas engine. Ratings: 160-242 bkW (215-325 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 160.0 bkW
Maximum Rating 242.0 bkW
Emissions NSPS Site Compliant Capable
Displacement 14.59 L
Compression Ratio 9.4:1
Aspiration Naturally Aspirated or Turbocharged-Aftercooled
Rotation (from flywheel end) Counterclockwise
Flywheel and Flywheel Housing SAE No. 1
Flywheel Teeth 113
Weight (dry) 1360.8 kg
Oil Change Interval 750 hours
Ignition, Protection Altronic III
Stroke 165.0 mm
Bore 137.0 mm

Capacity for Liquids

Cooling System 37.9 L
Lube Oil System (refill) 75.7 L
  • Air Inlet System
    •  Air cleaner — heavy-duty
    •  Air cleaner rain cap
    •  Service indicator
  • Air cleaner — heavy-duty
    • Air cleaner rain cap
      • Service indicator
        • Control System
          •  Governor — Woodward PSG mechanical
          •  Governor locking — positive control
        • Governor — Woodward PSG mechanical
          • Governor locking — positive control
            • Cooling System
              •  Thermostats and housing
              •  Jacket water pump
              •  Aftercooler water pump
              •  Aftercooler core
            • Thermostats and housing
              • Jacket water pump
                • Aftercooler water pump
                  • Aftercooler core
                    • 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 III ignition system
                    • Altronic III ignition system
                      • Instrumentation
                        •  Service meter
                      • Service meter
                        • Lube System
                          •  Crankcase breather — top mounted
                          •  Oil cooler
                          •  Oil filter — RH
                          •  Auxiliary oil reservoir
                          •  Oil pan — full sump
                          •  Oil filler in valve cover, dipstick — RH
                        • Mounting System
                          •  Engine supports
                        • Engine supports
                          • Protection System
                            •  Shutoffs
                          • General
                            •  Paint — Cat yellow
                            •  Crankshaft vibration damper and drive pulleys
                            •  Lifting eyes
                          • Air Inlet System
                            •  Precleaner
                          • Charging System
                            •  Battery chargers
                            •  Charging alternators
                            •  Charging alternators f/u/w c customer supplied shutoffs
                            •  Ammeter gauge
                            •  Ammeter gauge and wiring
                            •  Control mounting
                          • Battery chargers
                            • Charging alternators
                              • Charging alternators f/u/w c customer supplied shutoffs
                                • Ammeter gauge
                                  • Ammeter gauge and wiring
                                    • Control mounting
                                      • Control System
                                        •  PSG Woodward governor
                                      • Cooling System
                                        •  Radiators
                                        •  Non-sparking blower fan
                                        •  Blower fans for customer supplied radiators
                                        •  Fan drives for customer supplied radiators
                                        •  ATAAC conversion
                                        •  Aftercooler
                                        •  Expansion tank
                                        •  Heat exchangers
                                      • Radiators
                                        • Non-sparking blower fan
                                          • Blower fans for customer supplied radiators
                                            • Fan drives for customer supplied radiators
                                              • ATAAC conversion
                                                • Aftercooler
                                                  • Expansion tank
                                                    • Heat exchangers
                                                      • Exhaust System
                                                        •  Flexible fittings
                                                        •  Elbow
                                                        •  Flange
                                                        •  Pipe
                                                        •  Rain cap
                                                        •  Muffler
                                                      • Flexible fittings
                                                        • Elbow
                                                          • Flange
                                                            • Pipe
                                                              • Rain cap
                                                                • Muffler
                                                                  • Fuel System
                                                                    •  Fuel filter
                                                                    •  Natural gas valve and jet kits
                                                                  • Ignition System
                                                                    •  CSA shielded ignition
                                                                    •  Wiring harness
                                                                  • 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 and clutch support
                                                                        •  Front stub shaft and flywheel stub shaft
                                                                      • Protection System
                                                                        •  Gas valves
                                                                      • Starting System
                                                                        •  Air starting motor
                                                                        •  Electric air start control
                                                                        •  Air pressure regulator
                                                                        •  Air silencer
                                                                        •  Electric starting motor— single 12- and 24-volt
                                                                        •  Starting aids
                                                                        •  Battery sets, cables, and rack
                                                                      • Air starting motor
                                                                        • Electric air start control
                                                                          • Air pressure regulator
                                                                            • Air silencer
                                                                              • Electric starting motor— single 12- and 24-volt
                                                                                • Starting aids
                                                                                  • Battery sets, cables, and rack
                                                                                    • General
                                                                                      •  Damper guard
                                                                                    • Damper guard
                                                                                      Built for it