Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Package Size

Exceptional power density enables standardization across numerous applications. Multiple installation options minimize total package size. Ideal for equipment with narrow engine compartments.

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program

Select Units


On construction sites and mining operations, in agriculture and forestry, and in a wide range of industries, Cat® C18 ACERT™ Industrial Diesel Engines deliver the power, performance and durability to take on the biggest challenges. More importantly, they're backed by the world-class Cat dealer network ready to service and support every Cat® industrial engine. Industries and applications powered by C18 ACERT engines include Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers, Grinders, Compactors, Rollers, Compressors, Construction, Cranes, Dredgers, Forestry, General Industrial, Hydraulic Power Units, Irrigation Equipment, Material Handling, Mining, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Surface Hauling Equipment and Trenchers. C18 ACERT engines, with 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: 571-597 bkW (765-800 bhp) @ 1800-2100 rpm meet U.S. EPA Tier 2 equivalent emission standards. Non-certified ratings are also available at 429-522 bkW (575-700 bhp) @ 1800-2100. Ratings below 560 bkW (751 bhp) are available using U.S. EPA and EU Flexibility, and for other global regulated and non-regulated areas. Ratings above 560 bkW (751 bhp are available using U.S. EPA Flexibility and for other global regulated and non-regulated areas.

Power Rating

  • Minimum Power 575.0 BHP 429.0 bkW
  • Maximum Power 800.0 BHP 597.0 bkW
  • Rated Speed 1800-2100 rpm 1800-2100 rpm

Emission Standards

  • Emissions China Nonroad III, U.S. EPA Tier 3 equivalent or U.S. EPA Tier 2 equivalent, EU Stage IIIA equivalent, or Non-certified China Nonroad III, U.S. EPA Tier 3 equivalent or U.S. EPA Tier 2 equivalent, EU Stage IIIA equivalent, or Non-certified


  • Engine Configuration Inline 6, 4-Stroke-Cycle Diesel Inline 6, 4-Stroke-Cycle Diesel
  • Bore 145 mm (5.71 in) 145 mm (5.71 in)
  • Stroke 183 mm (7.2 in) 183 mm (7.2 in)
  • Aspiration Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA)
  • Displacement 18.1 L (1104.5 in³) 18.1 L (1104.5 in³)
  • Compression Ratio 16.3:1 16.3:1
  • Combustion System Direct Injection Direct Injection
  • Rotation from Flywheel End Counterclockwise Counterclockwise

Engine Dimensions - Approximate

  • Height 1243-1257 mm (48.9-49.5 in) 1243-1257 mm (48.9-49.5 in)
  • Length 1388.2-1414 mm (54.6-55.7 in) 1388.2-1414 mm (54.6-55.7 in)
  • Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1673 kg (3688 lb) 1673 kg (3688 lb)
  • Width 921-974 mm (36.3-38.3 in) 921-974 mm (36.3-38.3 in)

C18 ACERT™ Standard Equipment

Air Inlet System

  • Turbocharged Aftercooled (429-470 bkW, 575-630 bhp)
  • Twin Turbocharged Aftercooled (522-597 bkW, 700-800 bhp)
  • Air-to-Air Aftercooled

Charging System

  • Charging alternator 24 volt, 50 amp

Control System

  • Electronic governing, PTO speed control
  • Programmable ratings
  • Automatic altitude compensation
  • Power compensation for fuel temperature
  • Programmable low and high idle and total engine limit
  • Electronic diagnostics and fault logging
  • Engine monitoring system SAE J1939 broadcast and control
  • ADEM™ A4 Electronic Control Unit (ECU)

Cooling System

  • Thermostats and housing, vertical outlet
  • Jacket water pump, centrifugal
  • Water pump, inlet

Exhaust System

  • Exhaust manifold, dry
  • Optional exhaust outlet

Flywheels and Flywheel Housing

  • SAE No. 1 or SAE No. 0 flywheel housing

Fuel System

  • MEUI injection
  • Fuel filter, secondary (2 micron)
  • Fuel filter, tertiary (2 micron)
  • ACERT™ Technology
  • Fuel transfer pump
  • Fuel priming pump

Lube System

  • Crankcase breather
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Front sump oil pan
  • Oil dipstick
  • Gear driven oil pump


  • Vibration damper
  • Lifting eyes
  • Cold start capability to -20° C (-4° F)
  • Paint: Caterpillar yellow, with optional colors available at request

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