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Cat C18 ACERT engines are the ideal solution for your demanding operations in the oilfield. Decades of field operation and intense research and development allow Cat C18 ACERT engines to deliver excellent performance with low operating costs and emissions.This is an ideal engine for land mechanical drilling applications such as mud pump drives.Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.Cat C18 ACERT™ Industrial Diesel Engine. Ratings: 429-522 bkW (575-700 bhp) @ 1800-2100 rpm meet China Stage II, U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Ratings: 570-597 bkW (765-800 bhp) @ 1800-2100 rpm meet U.S. EPA Tier 2 equivalent emission standards.

Engine Specifications

  • Minimum Rating 575.0 BHP 429.0 bkW
  • Maximum Rating 800.0 BHP 597.0 bkW
  • Emissions EPA and CARB Non-Road Mobile Tier 3, EU Stage IIIA EPA and CARB Non-Road Mobile Tier 3, EU Stage IIIA
  • Rated Speed 2100.0 r/min 2100.0 r/min
  • Bore 5.71 in 145.0 mm
  • Stroke 7.2 in 183.0 mm
  • Displacement 1100.0 in³ 18.0 l
  • Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled
  • Governor and Protection ADEM A3 ADEM A3
  • Engine Weight - Net Dry 2807.0 lb 1273.0 kg
  • Oil Change Interval 250 250
  • Rotation from Flywheel End Counterclockwise Counterclockwise
  • Flywheel and Flywheel Housing SAE No. 0 or SAE No. 1 SAE No. 0 or SAE No. 1
  • Flywheel Teeth 136 (SAE 0), 113 (SAE 1) 136 (SAE 0), 113 (SAE 1)

Capacity for Liquids

  • Minimum Cooling System - Engine Only 13.2 gal (US) 50.0 l


  • Length 54.7 in 1389.0 mm
  • Width 36.2 in 919.0 mm
  • Height 49.5 in 1227.0 mm

Engine Design

- Proven reliability and durability- Robust diesel strength design prolongs life and lowersowning and operating costs- Broad operating speed range- High power density — lightweight engine for weightsensitive applications- PTO drive options provide flexible access to auxiliarypower for pumps and other needs

Advanced Digital Engine Management

ADEM A3 control system providing integrated ignition,speed governing, protection, and controls, includingdetonation-sensitive variable ignition timing. ADEM A3has improved: user interface, display system, shutdowncontrols, and system diagnostics.

Optional Attachments

- Engine-Mounted Transmission Oil Cooler — integration with engine cooling system allows ease ofinstallation and a tighter overall engine package- Engine Brakes — braking capabilities for mobileapplications

Custom Packaging

For any petroleum application, trust Caterpillar to meetyour exact needs with a factory custom package. Cat®engines, generators, enclosures, controls, radiators,transmissions — anything your project requires — can becustom designed and matched to create a one-of-a kindsolution. Custom packages are globally supported andare covered by a one-year warranty after startup.


Caterpillar has a full line of engine-transmission packagesthat can be fully integrated with your axle, hydraulics, andoperator interface. Cat transmissions deliver continuousoperation under full load, smooth shifting at any speed,and maximum up time, with unmatched durability andeasy maintenance.

Full Range of Attachments

Large variety of factory-installed engine attachmentsreduces packaging time


Every engine is full-load tested to ensure proper engineperformance.

Product Support Offered Through Global Cat Dealer

- More than 2,200 dealer outlets- Cat factory-trained dealer technicians service everyaspect of your petroleum engine- Cat parts and labor warranty- Preventive maintenance agreements available for repairbefore-failure options- S•O•SSM program matches your oil and coolant samplesagainst Caterpillar set standards

Over 80 Years of Engine Manufacturing Experience

Ownership of these manufacturing processes enablesCaterpillar to produce high quality, dependable products.- Cast engine blocks, heads, cylinder liners, and flywheelhousings- Machine critical components- Assemble complete engine

Web Site

For all your petroleum power requirements, visit

C18 ACERT™ Standard Equipment

Air Inlet System

  • Single turbocharger, mid-mounted, inlet 152.4 mm (6 in), hoseconnection
  • Dual turbocharger, front and rear inlet 127.0 mm (5 in.), hoseconnection

Control System

  • Electronic governing, PTO speed control
  • Programmable ratings
  • Cold mode start strategy
  • Automatic altitude compensation
  • Power compensation for fuel temperature
  • Programmable low and high idle and TEL
  • Electronic diagnostics and fault logging
  • Engine monitoring and protection system (speed, temperature,pressure)
  • J1939 Broadcast (diagnostic, engine status, and control)

Cooling System

  • Thermostats and housing — outlet vertical
  • Jacket water pump — gear-driven, centrifuga
  • RH front water pump inlet
  • All plugs/fittings are STOR for lines gp water

Exhaust System

  • Exhaust manifold — dry
  • Single turbo — front-facing turbo exhaust, full marmonconnection, maximum load 10 kg for direct connection to turbo
  • Dual turbo — exhaust elbow, dry 203 mm (8 in)

Flywheels and Flywheel Housings

  • See Mandatory Options

Fuel System

  • Electronic unit injector
  • Fuel filter, secondary, mid-mount (LH 2 micron high performance)
  • Fuel transfer pump, LH front
  • Fuel priming pump, LH mid-mount
  • Fuel sample valve, mounted on fuel filter base.

Lube System

  • Crankcase breather — rear valve cover
  • Oil cooler — RH (dual)
  • Oil filter — RH, LH
  • Oil pan — front sump
  • Oil dipstick — LH front
  • Oil pump

Mounting System

  • Front support (shipping only)

Power Take-Offs

  • Crankshaft pulley, 203.2 mm (8 in), 3 grooves 292.1 mm(11.5 in) 1 groove, all 15.9 mm (.63 in) width
  • Hydraulic pump drive, SAE A, 11-tooth


  • Vibration damper
  • Paint — Cat yellow
  • Lifting eyes
  • Automatic variable timing, electronic
  • Electronic installation kit 70-pin connector (connectors, pins,sockets)

Mandatory Options

  • Throttle position sensor
  • Single turbo only — exhaust system (front or rear)
  • Flywheel housing or rear PTO
  • Primary filter/water separator

C18 ACERT™ Optional Equipment

Air Compressor

  • Air compressor governor
  • Expansion chambers

Air Inlet System

  • Air cleaners
  • Air lines

Charging System

  • Charging alternators
  • Alternator mountings
  • Alternator wiring
  • Circuit breakers and mountings
  • Alternator belt guard

Cooling System

  • Radiator
  • Fan drive with radiator packages
  • Fan height instructions
  • Vee belts
  • Aftercooler lines with Caterpillar installed radiator
  • Single turbo configuration rear-facing exhaust
  • Single turbo configuration rear-facing exhaust
  • Aftercoooler lines
  • Suction fan adapters
  • Blower fan adapter
  • Blower fan
  • Suction fan
  • Fan belt
  • Coolant level sensor
  • Dry charge coolant conditioners

Exhaust System

  • Turbo exhaust connection
  • Flexible fittings
  • Elbows, flange, clamp, pipes
  • Exhaust adapters
  • Manifold
  • Mufflers

Fuel Systems

  • Flexible fuel lines
  • Fuel filter location
  • Fuel cooler
  • Water separator


  • Gauges and instrument panels

Lube System

  • Oil pans
  • Drain and cover
  • Oil level gauge
  • Remote oil filters
  • Oil filters
  • Lubricating oils

Mounting System

  • Structural steel base
  • Front and rear engine support

Power Take-Offs

  • Rear enclosed clutches
  • Hydraulic pump drives
  • Hydraulics gear pumps
  • Clutch supports
  • Crankshaft pulleys

Protection System

  • Air shutoff

Starting System

  • Air starting motors
  • Air pressure regulator
  • Air silencer
  • Start switch
  • Electric starting motors — 12V, 24V
  • Battery sets – 24V
  • Battery cable and rack
  • Starting aids

Transmission Arrangement

  • Transmission water lines

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