G3408C Low Emissions Gas Compression Engine

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.

Maximum Rating
425BHP
Emissions
NSPS Site Compliant Capable or Non-regulated
Displacement
1099in³
Minimum Rating
425BHP
Compression Ratio
8.5:1
Aspiration
Turbocharged-Aftercooled
Rotation from Flywheel End
Counterclockwise
Flywheel and Flywheel Housing
SAE No. 0
Flywheel Teeth
136
Weight – Dry
4950lb
Oil Change Interval
750 hours
Ignition, Protection
Cat EIS
Stroke
6in
Bore
5.4in
Cooling System
14.5gal (US)
Lube Oil System – Refill
39gal (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
  • Air Inlet System
    • Air cleaner — two-stage
    • Air inlet adapter
    • Precleaner
    • Air cleaner rain cap
  • Charging System
    • Battery chargers
    • Charging alternators
    • Ammeter gauge
    • Ammeter gauge and wiring
    • Control mounting
  • Cooling System
    • Radiators
    • Blower fan and fan drives for customer suppliedradiators
    • Expansion tank
    • Heat exchangers
  • Exhaust System
    • Flexible fittings
    • Elbows
    • Flanges
    • Rain caps
    • Mufflers
    • Exhaust manifold — instrument holes at each port
  • Fuel System
    • Dual gas regulator
    • Carburetor kits
    • Fuel filter
  • Ignition System
    • CSA ignition
    • Ignition ground wiring harness
    • Power supply
  • Instrumentation
    • Alarm module
    • Gauges and instrument panels
  • Mounting System
    • Vibration isolators
  • Power Take-offs
    • Auxiliary drive pulleys
    • Enclosed clutch and 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
    • Air pressure regulator
    • Air silencer
    • Electric start control
    • Electric starting motors — single 24V
    • Starting aids
    • Battery sets — (24V dry), cables, and rack
  • General
    • Special paint




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Small Excavators Big Savings: Terms and Conditions

* Offer valid from October 1, 2024 through December 31, 2024 on new 313 through 317 Cat® excavators sold by participating Cat dealers to customers in the USA or Canada. Purchase must occur during offer period. Offer subject to machine availability and credit approval by Cat Financial. Not all customers will qualify. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply.

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*Offer valid from October 1, 2024 through December 31, 2024. Offer only available on select new Cat® machines listed in our Heavy Equipment Promotion page. Purchase must occur by December 31, 2024. Offer subject to machine availability. Offer is subject to credit approval by Caterpillar Financial Services Corporation for US customers, and Caterpillar Financial Services Limited for Canadian customers. Not all customers will qualify. The offered Cat Customer Value Agreement (CVA) includes 6 maintenance parts kits; S∙O∙SSM; and 36 month VisionLink® ConnectPro. The maintenance parts cover the first 3,000 hours^ (estimated 3 years) of machine utilization. Each kit contains one set of parts for regular planned maintenance under normal operating conditions. In some severe applications where maintenance parts need to be replaced more frequently, additional parts will be at customer’s expense. Offer excludes additional maintenance parts, dealer labor, wear parts, and fluids. Offer also includes a 36 month/5000 hour (whichever occurs first) Powertrain, Hydraulics and Technology Equipment Protection Plan (EPP). In some areas, EPP might be sold separately from the CVA. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply. Contact your Cat dealer for details.

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*Offer valid from October 1, 2024 through December 31, 2024. Offer only available on purchases of new mini excavators, micro excavators, skid steer loaders, and compact track loaders sold by participating Cat dealers to customers in the USA or Canada. Purchases (both machine and CVA) and machine delivery must occur by December 31, 2024. Offer subject to machine availability. Offer is subject to credit approval by Caterpillar Financial Services Corporation for US customers, and Caterpillar Financial Services Limited for Canadian customers. Not all customers will qualify. The credit $500 USD for CVA purchase can only be applied toward the purchase of a qualifying Cat Customer Value Agreement (CVA). CVA must be at least 2yr/1000hr and must include 1-year Preventative Maintenance Parts Kit, TA1 annual Inspection, signed CVA contract, and Product LinkTM. Amount of CVA credit is the same for all models and cannot exceed the price of the qualifying CVA. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply.

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