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C18 Commercial Propulsion Engines

The C18 ACERT marine propulsion engine has commercial application ratings of 454 - 803 bhp at 1800 - 2100 rpm that meet U.S. EPA Tier 3, IMO II, EU IWW, and China II emissions regulations. In addition to meeting the stricter EPA Tier 3 emissions, this engine now offers a fresh water aftercooled option for the commercial propulsion and auxiliary engines and genset packages. From fishing to offshore and everything in between, you can be confident that we have the solution to fit your needs.

C18

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The Cat® C18 is built for reliable performance in the marine power systems range, backed by Al-Bahar's regional service and support network.

Power Range
454 - 1136 bhp (339 - 847 bkW)
Speed Range
1500 - 2100 rpm
Emissions
U.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II
Aspiration
Turbocharged - Aftercooled
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  • Specifications
  • Features
  • Standard Equipment

Specifications

Power Rating specifications
Power Range 454 - 1136 bhp (339 - 847 bkW)

Features

Separate Circuit Aftercooling System

C18 Commercial Propulsion engines now incorporate a separate circuit aftercooling system (SCAC) for all configurations with A through C ratings

Emissions

EPA Tier 3 Compliant, IMO II and EU IWW, China II compliant

Cooling System

Heat exchanger and Keel cooled options for all ratings

Turbo Configurations

Single turbo configurations for all ratings

Marine Certifications

All major MCS type approvals available from factory

Standard Equipment

AIR INLET SYSTEM
  • Separate circuit after-cooled (SCAC)
  • Open Crankcase Ventilation (OCV) system
  • Turbocharger, jacket water cooled
  • Turbocharger inlet, 152 mm (6 in) OD straight connection
  • Air Start Accessories
COOLING SYSTEM
  • Separate Circuit After-Cooling (SCAC) for both HEX and Keel cooled engines
  • Engine JW and SCAC Shell & Tube Heat Exchangers for HEX cooled engines
  • SCAC pump, gear driven, for HEX cooled engines only
  • Jacket water pump, gear driven
  • Sea water pump, bronze impeller, gear driven
EXHAUST SYSTEM
  • Water-cooled exhaust manifold & turbocharger
  • 152 mm (6 in) round flanged outlet
FLYWHEELS & FLYWHEEL HOUSINGS
  • SAE No. 0, Flywheel SAE. 18, 136 teeth
  • SAE No. 1, Flywheel: 14 inch, 113 teeth
FUEL SYSTEM
  • Front service simplex fuel system
  • Fuel transfer pump, gear driven
  • Manual fuel priming pump
  • Hybrid fuel line design
LUBE SYSTEM
  • Front service simplex oil system
  • Center sump oil pan: Deep 500 hour oil change interval, Shallow 250 hour oil change interval
  • Front and top service oil filler locations
  • Front service dipstick
  • Oil pump, gear driven
MOUNTING SYSTEM
  • Front support - adjustable
POWER TAKE-OFFS
  • Poly-V groove for alternator drive
  • NOTE: There are no standard power take-offs available
GENERAL
  • Front damper guard
  • Front service engine
  • Common electrical bonding point
  • Engine does not ship with zinc components
CONTROL SYSTEM
  • Programmable low idle
  • WOSR (Wide Operating Speed Range) available for EPA Tier 3 - B and C Ratings
  • Adjustable High Idle (TEL) - EPA Tier 3 WOSR Ratings Only
  • Electronic diagnostics and fault logging
  • Engine and transmission monitoring (speed, temperature, pressure)

Optional Equipment

EXHAUST SYSTEM

  • Dry Elbows
  • Water-Cooled Elbows
  • Flexible Fitting
  • Outlet Flange
  • Muffler

AIR INLET SYSTEM

  • Air Inlet Adapter

CHARGING SYSTEM

  • Battery Chargers
  • Charging Alternators
  • Alternator Mounting Group
  • Ammeter

CONTROL SYSTEM

  • MECP-I
  • CAT Alarm and Protection

COOLING SYSTEM

  • Aux expansion tank flange kit
  • Exhaust Temp Sensor
  • Heat Exchanger Pressure Sensor

FUEL SYSTEM

  • Duplex Fuel Filters
  • Flexible Fuel Lines
  • Fuel Cooler
  • Fuel/Water Separator

INSTRUMENTATION

  • Instrument Panels
  • OEM Wiring Harness
  • Engine to Engine Harness
  • Transmission Sensors
  • Oil Level Sensor

Instrumentation

  • Digital Tachometer

LUBE SYSTEM

  • Duplex Oil Filters
  • Transmission Oil Cooler
  • Sump Pump

MOUNTING SYSTEM

  • Vibration Isolators
  • Front Support
  • Rear Support

POWER TAKE-OFFS

  • NOTE: PTO options require torsional vibrations analysis
  • Crankshaft Pulleys
  • Front Stub Shaft
  • Hydraulic Pump Drive Adapter
  • Front Enclosed Clutch

PROTECTION SYSTEM

  • Marine Classification Society and SOLAS

STARTING SYSTEM

  • Electric Starting Motors - Single 24 Volt
  • Starting Aids - JW Heater 120 / 240V
  • Single Electric 24V Starter
  • Battery Sets - 24 Volt - Dry
  • Single Air Starting Motor

PACKING

  • Engine Protective Cover
  • Storage Preservation
  • Export Packing