G3512 LE Gas Petroleum Engine

Gas Compression Engines G3512 TA

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Key Specs

Maximum Rating
1004 BHP
749 bkW
NSPS Site Compliant Capable
NSPS Site Compliant Capable
3158 in³
51.8 l


The line of G3500 engines brings versatility, uptime, and low operating cost to your gas compression operation. They are equipped with ADEM A3 technology that enables highest performance and safety while maintaining low emissions. Ideal applications for G3500 engines include gas lift, gas gathering, and wellhead gas compression. Cat G3508 gas engine. Ratings: 589-749 bkW (790-1004 bhp) @ 1200-1400 rpm are NSPS site compliant capable with customer-provided aftertreatment.

Product Specifications for G3512 TA

Maximum Rating 1004 BHP 749 bkW
Emissions NSPS Site Compliant Capable NSPS Site Compliant Capable
Displacement 3158 in³ 51.8 l
Minimum Rating 790 BHP 589 bkW
Ignition, Protection ADEM™ A3 ADEM™ A3
Air/Fuel Ratio Control ADEM™ A3 ADEM™ A3

G3512 TA Standard Equipment

Air Inlet System

  • Air cleaner — intermediate-duty with service indicator

Cooling System

  • High temperature circuit (engine jacket + oil cooler):
  • Low temperature circuit (aftercooler):

Exhaust System

  • Watercooled exhaust manifolds
  • Crankcase breather — top mounted

Flywheels & Flywheel Housings

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

Fuel System

  • Gas pressure regulator
  • Natural gas carburetor


  • Advisor panel

Lubrication System

  • Oil cooler
  • Oil filter — RH
  • Oil bypass filter (TA or NA engines only)
  • Oil pan — shallow
  • Oil sampling valve
  • Turbo oil accumulator

Mounting System

  • Rails, engine mounting — 254 mm (10 in.)

Protection System

  • Electronic shutoff system
  • Gas shutoff valve


  • Paint — Cat yellow
  • Vibration damper and guard — dual 484 mm (23 in.)

G3512 TA Optional Equipment

Air Inlet System

  • Remote air inlet adapters
  • Precleaners

Charging System

  • Battery chargers
  • Charging alternator

Cooling System

  • Cleanable aftercooler core
  • Connection flanges
  • Expansion and overflow tank
  • Water level switch gauge

Exhaust System

  • Flexible fittings
  • Elbows
  • Connection flanges
  • Exhaust expanders
  • Rain cap (NA engine only)
  • Mufflers

Fuel System

  • Low pressure gas conversions
  • Propane gas valve and jet kits
  • Fuel filter
  • Air/fuel ratio control


  • PL1000 communications modules

Lubrication System

  • Oil bypass filter removal
  • Oil pan accessories
  • Sump pump
  • Air prelube pump
  • Manual prelube pump
  • Lubricating oil

Mounting System

  • Rails
  • Vibration isolators

Power Take-Offs

  • Front accessory drives
  • Auxiliary drive shafts and pulleys
  • Front stub shaft
  • Pulleys

Protection System

  • Crankcase explosion relief valves

Starting System

  • Air starting motor
  • Air pressure regulator
  • Air silencer
  • Electric air start controls
  • Electric starting motors — dual 24-volt
  • Battery sets (24-volt dry), cables, and rack


  • Flywheel guard removal
  • Engine barring group
  • Premium 8:1 pistons

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