C18 (>560 kW)

Cat® C18 Industrial Power Unit (>560 kW)

The Cat® C18 Industrial Power Unit is offered in ratings ranging from 563-597 kW (755-800 hp) @ 1800 rpm. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

High Power Density

C18 engines with ratings above 560 kW (755 bhp) have excellent power density thanks to series turbochargers. With a top rating of 597 kW (800 bhp). Power density coupled with a compact aftertreatment allows you to downsize the total space claim of your installation across numerous applications while realizing a reduction in maintenance requirements and cost of operation.

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

C18 engines are ideal choices to power applications in:

  • Aircraft ground support
  • Construction
  • Forestry
  • General industrial
  • Material handling
  • Mining

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.


Fully configurable engine with exceptional power density, numerous options, and a compact,simplified aftertreatment to minimize total package size and enable commonization across a widerange of applications.

Total Cost of Ownership

Whether you own a fleet of machines or even just one, it's important to keep lifetime costs of the engine low. The Cat C18 aims to do just that through a combination of technologies that only require 500-hour service intervals and optimize fluid consuption levels to be the most effective and efficient no matter the application.

Cat Dealer Product Support

With product support offered through the global Cat dealer network and an included warranty, the Cat C18 offers peace of mind with scheduled maintenance and simplified service routines. See your Cat dealer for details.

Advanced Features

Clean emissions module (CEM) consisting of a single-can diesel oxide catalyst (DOC). The DOC is a maintenance-free , passive aftertreatment solution that does not require thermal management or regeneration. It also eliminates the need for diesel exhaust fluid (DEF), reducing lifelong operating cost.

Standard Equipment

Air Inlet System
  • Series Twin Turbocharged
  • Air-to-Air Aftercooled
  • Mid-mount turbocharged system with front and rear exhaust configurations (Tier 4 Final, Stage V)
Control System
  • Electronic control system
  • Over-foam wiring harness
  • Automatic altitude compensation
  • Power compensated for fuel temperature
  • Remote fan control
  • Configurable software features
  • Engine monitoring system SAE J1939 broadcast and control
  • Integrated Electronic Control Unit (ECU)
  • Available in 12V or 24V systems
Cooling System
  • Cat designed and installed cooling system provides robust performance in all applications.
Flywheels and Flywheel Housing
  • Choice of SAE No. 0 or SAE No. 1 flywheel housing
  • Available SAE No. 1 power take off with optional SAE A, SAE B or SAE C power take off drives. Engine power can also be taken from the front of the engine with optional attachments. (Tier 4 Final, Stage V).
Fuel System
  • Mechanical electronic fuel injection (MEUI)
  • Primary fuel filter
  • Secondary fuel filters
  • Fuel transfer pump
  • Electronic fuel priming
Lube System
  • Open crankcase ventilation system with fumes disposal (OCV filter system).
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Oil dipstick
  • Gear driven oil pump
  • Choice of front, rear or center sumps
  • Open crankcase ventilation system with fumes disposal (OCV filter system) standard on C18 engines with ratings greater than 560 kW (US EPA Tier 4 Final, EU Stage V)
Power Take Off (PTO)
  • Dual rear power take off (PTO) for SAE No. 1 flywheel housing and SAE B or SAE C drives available. SAE A, SAE B or SAE C power take off (PTO) drives.
U.S. EPA Tier 4 Final, EU Stage V Aftertreatment/ Clean Emissions Control Equipment
  • No coolant, fuel or electrical connection points required
  • No thermal management or regeneration required
  • Clean Emissions Module (CEM), consisting of a single-can Diesel Oxidation Catalyst (DOC).
  • No diesel exhaust fluid (DEF) required (reduced lifelong operating cost)
  • NOx Reduction System (NRS)
  • Maintenance-free until major engine overhaul

Additional information

Offering Type

Power Rating - Maximum Power

597 kW ( 800 HP )

Power Rating - Maximum Torque

3710 Nm @ 1300 rpm ( 2736 lb-ft @ 1300 rpm )

Power Rating - Rated Speed


Power Rating - Minimum Power

563 kW ( 755 HP )

Emission Standards - Emissions

U.S. EPA Tier 4 Final, EU Stage V

General - Engine Configuration

In-Line 6

General - Cycle

4-Stroke-Cycle Diesel

General - Bore

145 mm ( 5.7 in )

General - Stroke

183 mm ( 7.2 in )

General - Displacement

18.1 l ( 1104.5 in³ )

General - Compression Ratio


General - Aspiration

Series Twin Turbocharged-Aftercooled

General - Combustion System

Direct Injection

General - Cooling System


General - Rotation from Flywheel End


General - Aftertreatment


Power Unit Dimensions - Length

2391 mm ( 94.1 in )

Power Unit Dimensions - Width

1655 mm ( 65.1 in )

Power Unit Dimensions - Height

1928 mm ( 75.9 in )

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