3512C HD Dry Manifold with ATAAC Petroleum Engine Well Servicing Engines

Well Service Engines 3512C DGB

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Key Specs

Maximum Rating
2500 BHP
1864 bkW
Non-current EPA Tier 2
Non-current EPA Tier 2
3574 in³
58.6 l


Well stimulation operations in the oilfield are complex and demanding. The 3512C (HD) with dynamic gas blending engine for well stimulation operations was specifically developed to lower fuel cost while while meeting the highest standards in performance, durability, reliability, and emissions. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3512C (HD) engines, with ratings: 1678-1864 bkW (2250-2500 bhp) @ 1900 rpm meet IMO Tier II, U.S. EPA Marine Tier 2, and U.S. EPA Non-road Tier 2 equivalent emission standards. They are available using U.S. EPA and EU Flexibility, and for other regulated and non-regulated areas.

Product Specifications for 3512C DGB

Maximum Rating 2500 BHP 1864 bkW
Displacement 3574 in³ 58.6 l
Minimum Rating 2150 BHP 1603 bkW
Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled
Flywheel and Flywheel Housing SAE No. 0 SAE No. 0
Flywheel Teeth 151 151
Stroke 8.5 in 215 mm
Bore 6.7 in 170 mm
Emissions Non-current EPA Tier 2 Non-current EPA Tier 2
Length 110.4 in 2804 mm
Width 59.2 in 1504 mm
Height 86.3 in 2192 mm
Weight 14650 lb 6645 kg

3512C DGB Standard Equipment

Air Inlet System

  • Air-to-air aftercooled (ATAAC) (512DW04, 512DW05, 512DW06, 512DW07)
  • Air cleaners (single element w/service indicator)

Control System

  • With electronic fuel injector fuel system (10 amp DC power required to drive electronic engine control module)

Cooling System

  • ATAAC (512DW04, 512DW05, 512DW06, 512DW07)
  • Torque converter connections
  • Thermostats and housing, jacket water pump, gear-driven centrifugal (gear-driven centrifugal pumps)
  • Connections for radiator cooling
  • Dual outlets: 88.9 mm O.D. (3.5 in) elbow hose connections

Exhaust System

  • Land Well Service Engine:
  • Offshore Well Service Engine:

Flywheels & Flywheel Housing

  • Flywheel, SAE No. 0, 151 teeth
  • Flywheel housing, SAE No. 0

Fuel System

  • Primary fuel filter
  • Fuel priming pump
  • Fuel filter, RH spin-on type
  • Fuel transfer pump
  • Electronically controlled unit injectors


  • No standard instrumentation
  • Optional — remote instrumentation available Service meter

Lube System

  • Crankcase breather — top-mounted
  • Oil cooler
  • Oil filler and dipstick — RH
  • Oil pump
  • Oil filter — RH spin-on type
  • Rear sump oil pan, 250-hour change interval
  • Oil pan drain valve, 3/4" NPT female connection
  • Fumes disposal
  • Scavenger pump

Mounting System

  • Trunion front support

Power Take-Offs

  • ATAAC (512DW04, 512DW05, 512DW06, 512DW07)
  • Front housing, two-sided

Protection System

  • ADEM A3 ECU system to provide customer programmable engine deration strategies to protect against adverse operating conditions
  • Emergency stop logic inputs provided at 40-pin customer interface connection
  • ATAAC (512DW04, 512DW05, 512DW06, 512DW07)
  • Single Air inlet shutoff


  • Paint, Cat yellow
  • Vibration damper and guard
  • Lifting eyes

3512C DGB Optional Equipment

Air Inlet System

  • Air cleaner
  • Remote air inlet adapters
  • Air inlet heater

Charging System

  • Battery chargers
  • Charging alternators

Control System

  • Throttle position sensors

Cooling System

  • Coolant level sensor
  • Coolant conditioner
  • Connections

Emissions Certifications

  • IMO Certification and European Union Certification

Exhaust System

  • Flexible exhaust fitting
  • Elbows
  • Flange
  • Flange and exhaust adapters
  • Manifold
  • Mufflers

Fuel Systems

  • Flexible fuel lines
  • Fuel cooler
  • Fuel priming pumps
  • Water/fuel separator
  • Fuel level switch

Gauges and Instrument Panels

  • Engine mount premium panel
  • Remote instrumentation

Lube System

  • RH oil filters
  • Oil pan accessories
  • Oil pan front sump — 250 hrs
  • High capacity oil pan — 500 hrs

Power Take-Offs

  • Front Accessory Drives
  • Auxiliary Drive Shaft
  • Auxiliary Drive Pulleys
  • Front Stub Shaft
  • Front Crankshaft Adapter
  • Pulleys

Protection System

  • Corrosion Protection

Starting System

  • Air starting motors
  • Air pressure regulator
  • Air silencer
  • Hydraulic starter
  • Battery sets— 24V
  • Battery cable

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3512C HD Dry Manifold with ATAAC Petroleum Engine Well Servicing Engines

3512C HD Dry Manifold with ATAAC Petroleum Engine Well Servicing Engines

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