Propulsion engines

C18

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.

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Power Rating
Power Range454 - 1136 bhp (339 - 847 bkW)
Engine Specifications
Speed Range1500 - 2100 rpm
EmissionsU.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II
AspirationTurbocharged - Aftercooled
Bore5.7 in
Stroke7.2 in
Displacement1106.0 in³
Rotation from Flywheel EndCounterclockwise
Oil Change Interval250 / 500
Refill Capacity49 / 68 l
ConfigurationIn-line 6, 4-Stroke-Cycle Diesel
CoolingHeat Exchanger or Keel Cooled
GovernorElectroinc
Flywheel HousingSAE No. 0 (136 teeth) or SAE No. 1 (113 teeth)
Dimensions & Weights
Minimum Dry Weight4000.0 lb
Minimum Length73.0 in
Minimum Height47.2 in
Maximum Height51.2 in
Minimum Width44.6 in
Maximum Width47.4 in

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
  • SCAC and JW shunt tanks for maintaining proper pump inlet pressures

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)
  • Electronic fuel/air ratio control
  • Engine Protection Mode for extended ambient conditions - EPA Tier 3 Ratings Only
  • 70-pin customer connector
  • Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA +/-
  • C18 Marine Commercial Prop Engine Spec Sheet (339 bkW - 847 bkW)
    application/pdf
    Download ↓

Need installed dimensions with enclosure and tank? See Model Configurations