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SPECS SUMMARY

Maximum Rating 95 BHP (71 bkW)
Rated Speed 1800 rpm (1800 rpm)
Emissions Rich Burn: EPA NSPS Site Compliant Capable with Caterpillar or Customer Supplied AFRC & Aftertreatment
Minimum Rating 95 BHP (71 bkW)
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.

Specifications

Maximum Rating 95 BHP (71 bkW)
Rated Speed 1800 rpm (1800 rpm)
Emissions Rich Burn: EPA NSPS Site Compliant Capable with Caterpillar or Customer Supplied AFRC & Aftertreatment
Minimum Rating 95 BHP (71 bkW)
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 (1022.3 kg)
Length 46 in (1158 mm)
Displacement 425 in³ (7 l)
Cooling System 4.23 gal (US) (16 l)
Lube Oil System - Refill 8.19 gal (US) (31 l)
Oil Change Interval 750
Width 29 in (744 mm)
Ignition, Protection ADEM™ A4
Air/Fuel Ratio Control ADEM™ A4
Stroke 6 in (152 mm)
Bore 4.75 in (121 mm)

Benefits and Features

The ADEM A4 system represents the next generation of engine management systems while reducing the number of mechanical components and easing troubleshooting. Features include: • Air/Fuel Ratio Control (AFRC) • Electronic ignition • Electronic governing/speed control • Start/stop logic • Engine protection & monitoring

Large variety of factory-installed engine attachments reduces packaging time

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.

More than 2,200 dealer outlets Cat factory-trained dealer technicians service every aspect of your petroleum engine Caterpillar parts and labor warranty. Preventive maintenance agreements available for repairbefore-failure options S•O•SSM program matches your oil and coolant samples against Catepillar set standards to determine: - Internal engine component condition - Presence of unwanted fluids - Presence of combustion by-products - Site-specific oil change interval

Over 60 years of natural gas engine production Ownership 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

For all your petroleum power requirements, visit www.cat.com/oilandgas.

Standard Equipment

  • Air cleaner — intermediate duty, dry
  • Air cleaner rain cap (shipped loose)
  • Service indicator
  • Thermostats and housing — full open temperature 97°C (207°F)
  • Jacket water pump — gear-driven, centrifugal, non-self-priming
  • Exhaust manifolds — watercooled
  • Exhaust elbow — dry 102 mm (4 in)
  • Three-way catalyst — 1.0 g and 0.5 g NOx catalyst options
  • Flywheel, SAE No. 1
  • Flywheel housing, SAE No. 1
  • SAE standard rotation
  • Air/fuel ratio control
  • Gas pressure regulator
  • Requires 10.3-68.9 kPa (1.5-10 psi) gas
  • Natural gas carburetor
  • ADEM A4 ignition
  • Crankcase breather, top mounted
  • Oil cooler
  • Oil filter
  • Oil pan, full sump
  • Oil filler and dipstick
  • The following parameters include alarm and shutdown

Optional Equipment

  • 24V, 35A alternator
  • 24V, 35A CSA alternator*
  • Radiators
  • Jacket water pump inlet adapter
  • Exhaust flex fitting — ANSI flange
  • Exhaust elbow
  • Catalyst harness
  • ANSI flange
  • CSA certified electronics and ignition*
  • Operator interface panel
  • Operator interface panel enclosure
  • 15', 25' and 50' interconnect harness
  • Air pressure regulator
  • Air start silencer
  • Vane starter
  • Electric starter
  • Turbine starter