Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3412 engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3412 engines include gas lift, gas gathering, and wellhead gas compression. Cat G3412 gas engine. Ratings: 448 bkW (600 bhp) @ 1800 rpm are available for non-regulated areas.

Engine Specifications
Minimum Rating 600 BHP
Maximum Rating 600 BHP
Emissions Non-regulated areas
Displacement 1649 in³
Compression Ratio 9.7:1
Aspiration Turbocharged-Aftercooled
Rotation from Flywheel End Counterclockwise
Flywheel and Flywheel Housing SAE No. 0
Flywheel Teeth 136
Weight - Dry 4720 lb
Oil Change Interval 750 hours
Ignition, Protection Altronic III
Stroke 6 in
Bore 5.4 in

Capacity for Liquids
Cooling System 20 gal (US)
Lube Oil System - Refill 45 gal (US)

Engine Design

- Improved 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

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 PC-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 outletsCat factory-trained dealer technicians service every aspect of your petroleum engineCat parts and labor warrantyPreventive maintenance agreements available for repairbefore-failure optionsS•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 productionOwnership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.- Casts engine blocks, heads, cylinder liners, and flywheel housings- Machines critical components- Assembles complete engine

Web Site

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

Standard Equipment

Air Inlet System
  • Air cleaner — single element with service indicator
Control System
  • Governor — Woodward PSG mechanica
  • 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
Fuel System
  • Gas pressure regulator
  • Natural gas carburetor
Ignition System
  • Digital ignition system
  • 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
Mounting System
  • Engine supports
Protection System
  • Shutoff
  • Paint — Cat yellow
  • Crankshaft vibration damper and drive pulleys
  • Lifting eyes

Optional Equipment

Air Inlet System
  • Air cleaner
  • 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
Cooling System
  • Radiators
  • Blower fan and fan drives for customer suppliedradiators
  • ATAAC conversion
  • Aftercooler
  • Expansion tank
  • Heat exchanger
Exhaust System
  • Flexible fittings
  • Elbows
  • Flanges
  • Rain caps
  • Mufflers
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
  • Alarm module
  • Gauges and instrument panels
Lube System
  • Auxiliary oil reservoir removal
  • Lubricating oil
Mounting System
  • Vibration isolators
Power Take-Offs
  • Auxiliary drive pulleys
  • Enclosed clutch
  • Clutch support
  • Front stub shaft
  • Flywheel stub shaft
  • Pulley removal
Protection System
  • Gas valves
  • Status control box interconnect wiring harness
Starting System
  • Air starting motor
  • Electric air start control
  • Air pressure regulator
  • Air silencer
  • Electric starting motors — single 24-volt
  • Starting aids
  • Battery sets (24-volt dry), cables, and rack
  • Tool set
  • Digital diagnostic tool

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