G3406 Gas Compression Engine



Rich burn engine design easily meets emission requirements
 - 0.5% O2 rating meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/8 and 2010/11 with the use of aftermarket AFRC and TWC

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time


Every engine is full-load tested to ensure proper engine performance.

Gas Engine Rating Pro

GERP is a web-based program designed to provide site performance capabilities for Cat® natural gas engines for the gas compression industry. GERP provides engine data for your site’s altitude, ambient temperature, fuel, engine coolant heat rejection, performance data, installation drawings, spec sheets, and pump curves.

Product Support Offered Through Global Cat Dealer

More than 2,200 dealer outlets Cat factory-trained dealer technicians service every aspect of your petroleum engine Cat parts and labor warranty Preventive maintenance agreements available for repairbefore-failure options S•O•SSM program matches your oil and coolant samples against Caterpillar set standards to determine:
 - Internal engine component condition
 - Presence of unwanted fluids
 - Presence of combustion by-products
 - Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Over 60 years of natural gas engine production Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.
 - Cast engine blocks, heads, cylinder liners, and flywheel housings
 - Machine critical components
 - Assemble complete engine

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com.

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com.

Engine Specifications
Maximum Rating 242 bkW (325 BHP)
Emissions NSPS Site Compliant Capable
Displacement 14.59 l (891 inu00b3)
Minimum Rating 160 bkW (215 BHP)
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 (3000 lb)
Oil Change Interval 750 hours
Ignition, Protection Altronic III
Stroke 165 mm (6.5 in)
Bore 137 mm (5.4 in)
Capacity for Liquids
Cooling System 37.9 l (10 gal (US))
Lube Oil System - Refill 75.7 l (20 gal (US))

Standard Equipment

  • Air Inlet System
    • Air cleaner — heavy-duty
    • Air cleaner rain cap
    • Service indicator
  • Control System
    • Governor — Woodward PSG mechanical
    • Governor locking — positive control
  • 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. 1 flywheel
    • SAE No. 1 flywheel housing
    • SAE standard rotation
  • Fuel System
    • Gas pressure regulator
    • Natural gas carburetor
  • Ignition System
    • Altronic III ignition system
  • Instrumentation
    • 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
  • Protection System
    • Shutoffs
  • General
    • Paint — Cat yellow
    • Crankshaft vibration damper and drive pulleys
    • Lifting eyes

Optional Equipment

  • 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
  • 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
  • Exhaust System
    • 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
  • 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
  • General
    • Damper guard

Enquiry Form

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.