G3304B Gas Compression Engine

Tough and durable, built on the industry-standard G3300 platform and equipped with technology that brings performance, uptime, and low operating cost to your operation. G3304B engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime. Ideal applications for G3304B engines include gas lift, gas gathering, and wellhead gas compression. Cat G3304B gas engine. Ratings: 71 bkW (95 bhp) @ 1800 rpm are NSPS site compliant capable with Caterpillar or customer-provided air-fuel ratio control and aftertreatment.

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Minimum Rating 95 BHP
Maximum Rating 95 BHP
Emissions NSPS 2010
Displacement 427 in³
Compression Ratio 10.5:1
Aspiration Naturally Aspirated
Rotation from Flywheel End Counterclockwise
Flywheel and Flywheel Housing SAE No. 1
Flywheel Teeth 156
Weight - Dry 2253.8 lb
Oil Change Interval 750
Ignition, Protection ADEM™ A4
Air/Fuel Ratio Control ADEM™ A4
Stroke 6 in
Bore 4.8 in
Cooling System 4.23 gal (US)
Lube Oil System - Refill 8.19 gal (US)
Air Inlet System
  • Air cleaner — intermediate duty, dry
  • Air cleaner rain cap (shipped loose)
  • Service indicator
Control System
  • ADEM A4
Cooling System
  • Thermostats and housing — full open temperature 97°C (207°F)
  • Jacket water pump — gear-driven, centrifugal, non-self-priming
Exhaust System
  • Exhaust manifolds — watercooled
  • Exhaust elbow — dry 102 mm (4 in)
  • Three-way catalyst — 1.0 g and 0.5 g NOx catalyst options
Flywheels & Flywheel Housings
  • Flywheel, SAE No. 1
  • Flywheel housing, SAE No. 1
  • SAE standard rotation
Fuel System
  • Air/fuel ratio control
  • Gas pressure regulator
  • Requires 10.3-68.9 kPa (1.5-10 psi) gas
  • Natural gas carburetor
Ignition System
  • ADEM A4 ignition
Lube System
  • Crankcase breather, top mounted
  • Oil cooler
  • Oil filter
  • Oil pan, full sump
  • Oil filler and dipstick
Protection System
  • The following parameters include alarm and shutdown
Charging Alternator
  • 24V, 35A alternator
  • 24V, 35A CSA alternator*
Cooling System
  • Radiators
  • Jacket water pump inlet adapter
Exhaust System
  • Exhaust flex fitting — ANSI flange
  • Exhaust elbow
  • Catalyst harness
  • ANSI flange
Ignition System
  • CSA certified electronics and ignition*
  • Operator interface panel
  • Operator interface panel enclosure
  • 15', 25' and 50' interconnect harness
Starting System
  • Air pressure regulator
  • Air start silencer
  • Vane starter
  • Electric starter
  • Turbine starter