C18

Maximum Power
800 HP / 597 kW
Maximum Torque
2736 lb-ft @ 1300 rpm / 3710 Nm @ 1300 rpm
Minimum Power
575 HP / 429 kW

The Cat® C18 Industrial Diesel Engine is offered in ratings ranging from 429-522 bkW (575-700 bhp)@ 1800-1900 rpm. Industries and applications powered by C18 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.

Power Rating
Maximum Power 800 HP / 597 kW
Maximum Torque 2736 lb-ft @ 1300 rpm / 3710 Nm @ 1300 rpm
Rated Speed 1800-2000
Minimum Power 575 HP / 429 kW
Emission Standards
Emissions EU Stage V
General
Engine Configuration In-Line 6
Bore 5.7 in / 145 mm
Stroke 7.2 in / 183 mm
Displacement 1104.5 in³ / 18.1 l
Compression Ratio 16.0:1
Aspiration Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment DOC or DOC+DPF+SCR
Engine Dimensions - Approximate
Length 56.6 in / 1438 mm
Width 44.6 in / 1132 mm
Height 53.4 in / 1356 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 3785 lb / 1717 kg
Aftertreatment Dimensions
Length 45.4 in / 1153 mm
Width 43.8 in / 1112 mm
Height 25.7 in / 652 mm
Weight 600 lb / 272 kg
Aftertreatment Dimensions*
Diameter 14 in / 356 mm
PETU Dimensions - Tier 4 Final Only
Length 33.6 in / 854 mm
Width 11.3 in / 287 mm
Height 21.7 in / 551 mm
Weight 42.8 lb / 19.4 kg
Volume Capacity 51.1 qt (US) / 48.4 l

Standard Equipment

  • Air Inlet System
    • 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)
  • Cooling System
    • Thermostats and housing, vertical outlet
    • Centrifugal water pump
    • Guidance on cooling system design available through your dealer to ensure equipment reliability
  • 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
    • MEUI injection
    • Primary fuel filter
    • Secondary fuel filters
    • Fuel transfer pump
    • Electronic fuel priming
  • Lube System
    • Open crankcase ventilation 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 (optional OCV filter system) (Tier 4 Final, Stage V)
  • Power Take Off (PTO)
    • SAE A, SAE B or SAE C power take off (PTO) drives. Engine power can also be taken from the front of the engine on some applications.
  • General
    • Paint: Caterpillar yellow, with optional colors available at request
  • U.S. EPA Tier 4 Final, EU Stage V Aftertreatment/ Clean Emissions Control Equipment
    • Aftertreatment information applies to ratings from 429-522 bkW (575-700 bhp)
    • Cat Regeneration System
    • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
    • Aftertreatment Electronic Control Unit (ECU)
    • NOx Reduction System (NRS)
    • Pump Electronic Control Unit (PETU)
    • Selective Catalytic Reduction (SCR)
    • Available in 12V or 24V systems
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