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.

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Engine Specifications
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Minimum Rating 255.0 BHP 190.0 bkW
Maximum Rating 400.0 BHP 298.0 bkW
Emissions NSPS Site Compliant Capable or non-regulated NSPS Site Compliant Capable or non-regulated
Displacement 1099.0 in³ 18.0 l
Compression Ratio 9.7:1 9.7:1
Aspiration Naturally Aspirated or Turbocharged-Aftercooled Naturally Aspirated or Turbocharged-Aftercooled
Rotation from Flywheel End Counterclockwise Counterclockwise
Flywheel and Flywheel Housing SAE No. 0 SAE No. 0
Flywheel Teeth 136 136
Weight - Dry 3700.0 lb 1678.0 kg
Oil Change Interval 750 hours 750 hours
Ignition, Protection Altronic III Altronic III
Stroke 6.0 in 152.0 mm
Bore 5.4 in 137.0 mm

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

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 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.- 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

G3408 Standard Equipment

Air Inlet System
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  • Air cleaner — single element with service indicator

G3408 Optional Equipment

Air Inlet System
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  • Air cleaner — dual element
  • Air inlet adapter
  • Precleaner
  • Air cleaner rain cap