CAT® G3408 INDUSTRIAL GAS ENGINE
Cat® G3408 Industrial Gas Engine. Ratings: 190-317 bkW (255-425 bhp) @ 1800 rpm and 249 bkW (332 bhp) @ 1500 rpm are NSPS site compliant capable with customer-supplied aftertreatment. Some ratings also have standard emission settings available for export only. For specific emission information, please consult your local Cat Dealer.
general
Bore137 mm (5.4 in)
Stroke152 mm (6.0 in)
Displacement18 L (1099 in³)
AspirationNaturally Aspirated (NA), Turbocharged Aftercooled (TA)
Engine ConfigurationEngine - Continuous


power rating
Minimum Power190.0 bkW
Maximum Power317.0 bkW
Frequency1500
1800 rpm
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Weight, Net Dry
2245 kg 4950 lb
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Height
1758 mm 692 in
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Width
1563 mm 615 in
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Length
1756 mm 691 in
G3408 STANDARD EQUIPMENT
- air inlet system
Air cleaner — single element with service indicator - control system
Governor — Woodward PSG mechanical
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
Instrumentation - 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 - shutoffs
General - paint — cat yellow###crankshaft vibration damper and drive pulleys###lifting eyes
G3408 OPTIONS
- air inlet system
Air cleaner — dual element
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
Non-sparking blower fan
Blower fan and fan drives for customer suppliedradiators
ATAAC conversion
Aftercooler
Expansion tank
Heat exchanger - exhaust system
Flexible fittings
Elbows
Flanges
Rain caps
Mufflers
Exhaust manifold - 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 - instrumentation
Gauges and instrument panels - lube system
Auxiliary oil reservoir removal
Lubricating oil - mounting system
Vibration isolators - power takeoffs
Auxiliary drive pulleys
Enclosed clutch
Clutch support
Front stub shaf
Flywheel stub shaft
Pulley removal - protection system
Gas valves - starting system
Air starting motor
Electric air start control
Air pressure regulator
Air silencer
Electric starting motor — single 24-volt
Starting aids
Battery sets (24-volt dry), cables, and rack