Gas compression engines

G3408C

Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3408C engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3408C engines include gas lift, gas gathering, and wellhead gas compression. Cat G3408C gas engine. Ratings: 317 bkW (425 bhp) @ 1800 rpm are NSPS site compliant capable with customer-provided aftertreatment or available for non-regulated areas.

Request a Quote
Have questions? Call 800.768.4200

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

Emissions

  • Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/08

Lean Burn Engine Technology

  • Lean-burn engines operate with large amounts of excess air. The excess air absorbs heat during combustion reducing the combustion temperature and pressure, greatly reducing levels of NOx. Leanburn design also provides longer component life and excellent fuel consumption.

Cat® Electronic Ignition System (EIS)

  • Detonation sensitive timing protects the engine against detonation damage. Higher voltage and longer spark duration mean easier starts, fewer misfires, and smoother operation. Diagnostic codes help pinpoint cylinder and component of interest. Spark plug maintenance codes identify spark plug condition

Ease of Operation

  • Deep sump oil pan has a larger capacity for normal 750-hour oil change intervals
    • Side covers on block allow for inspection of internal components

Full Range of Attachments

  • Large variety of factory-installed engine attachments reduces packaging time

Testing

  • 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 outletsCaterpillar factory-trained dealer technicians service every aspect of your petroleum engineCat parts and labor warrantyPreventive maintenance agreements available for repair-before-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.
  • 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.cat.com/oilandgas.
Engine Specifications
Maximum Rating425.0 BHP
Rated Speed1800 rpm
EmissionsRich Burn: EPA NSPS Site Compliant Capable with Caterpillar Supplied AFRC and Customer Supplied Aftertreatment
Minimum Rating425.0 BHP
Compression Ratio8.5:1
AspirationTurbocharged-Aftercooled
Rotation from Flywheel EndCounterclockwise
Flywheel and Flywheel HousingSAE No. 0
Flywheel Teeth136
Oil Change Interval750 hours
Ignition, ProtectionCat EIS
Stroke6.0 in
Bore5.4 in
Displacement1099.0 in³
Length69.1 in
Width61.5 in
Height69.2 in
Weight - Dry2041 lb
Capacity for Liquids
Cooling System14.5 gal (US)
Lube Oil System - Refill39.0 gal (US)

Air Inlet System

  • Air cleaner — single element with service indicator

Control System

  • Electronic governor
  • Air/fuel ratio 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. 0 flywheel
  • SAE No. 0 flywheel housing
  • SAE standard rotation

Fuel System

  • Gas pressure regulator (1.5 to 5 psi gas supply required)
  • Natural gas carburetor

Ignition System

  • Cat Electronic Ignition System (EIS) with detonation sensitive timing

Instrumentation

  • Service meter

Lube System

  • Crankcase breather — top mounted
  • Oil cooler
  • Oil filter — RH
  • Oil pan — deep sump
  • Oil filler — RH in valve cover and RH dipstick

Mounting System

  • Engine supports

Protection System

  • Detonation sensitive timing control
  • Shutoff

General

  • Paint — Cat yellow
  • Crankshaft vibration damper and pulleys
  • Lifting eyes
  • Cylinder block inspection covers
  • G3408C LE Spec Sheet
    application/pdf

Need installed dimensions with enclosure and tank? See Model Configurations