Gas Compression Engines G3508B

Request A Price Find Dealer

Key Specs

Maximum Rating
690 BHP
514 bkW
NSPS Site Compliant Capable
NSPS Site Compliant Capable
2115 in³
34.6 l


The line of G3500B engines brings versatility, uptime, and low operating cost to your gas compression operation. They deliver the lowest engine-out emissions in the industry without sacrificing performance.Ideal applications for G3500B engines include gas lift, gas gathering, and wellhead gas compression. Cat G3508B gas engine. Ratings: 514 bkW (690 bhp) @ 1400 rpm are NSPS site compliant capable.

Product Specifications for G3508B

Maximum Rating 690 BHP 514 bkW
Emissions NSPS Site Compliant Capable NSPS Site Compliant Capable
Displacement 2115 in³ 34.6 l
Minimum Rating 690 BHP 514 bkW
Ignition, Protection ADEM™ A3 ADEM™ A3

G3508B Standard Equipment

Air Inlet System

  • Axial Flow Air cleaner
  • Cleanable
  • Single element canister type with service indicator

Control System

  • ADEM A3 with integrated electronic throttle control
  • CSA certified

Cooling System

  • Two-stage charge air cooling
  • Thermostats and housing
  • Gear-driven jacket and aftercooler water pump
  • Stainless steel aftercooler cores

Exhaust System

  • Dry exhaust manifolds
  • Exhaust outlet: 200 mm I.D.

Flywheels and Flywheel Housings

  • SAE No. 00 flywheel
  • SAE No. 00 flywheel housing
  • SAE standard rotation

Fuel System

  • 7-50 psi gas supply
  • Electronic fuel metering valve
  • Gas pressure regulator, pivot valve operated

Ignition System

  • ADEM A3
  • Outdoor CSA certified

Lubrication System

  • Crankcase breather — top mounted
  • Oil cooler
  • Oil filter — RH
  • Oil pan
  • Oil sampling valve
  • Turbo oil accumulator

Power Take-Offs

  • Front housing — two-sided
  • Front lower — LH accessory drive

Torsional Vibration Analysis

  • Provided through Caterpillar, required through Q1 2010


  • Paint — Cat yellow
  • Crankshaft vibration damper and guard

G3508B Optional Equipment

Air Inlet System

  • Round air inlet adaptors

Charging System

  • Battery chargers
  • CSA certified version available with

Cooling System

  • Mechanical joint assembly connections

Exhaust System

  • Flexible fittings
  • Elbows
  • Flanges

Fuel System

  • Gas filter


  • Advisor display panel
  • Communications module

Lubrication System

  • Lubricating oil
  • Oil bypass filter
  • Air prelube pump

Power Take-Offs

  • Front stub shaft
  • Pulleys


  • Special paint

EU Certification

  • EEC DOI certification


  • Factory commissioning

See how G3508B compares against frequently compared products.

Use the comparison tool to compare detailed specs of Cat and competitor models.


Tools And Expert Help At Every Turn

Product Brochures and More Are Ready to Download!

Full specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.

Marketing Consent

Check out current offers for the G3508B

View More Offers