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Cat C18 ACERT High Performance Propulsion Engine (Tier 3)

The C18 ACERT marine propulsion engine has high performance commercial application ratings of 814-1015 mhp (803-1001 bhp) at 2100-2300 rpm that meet U.S. EPA Tier 3, IMO II, and EU Stage IIIA 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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    • Dimensions & Weights
      Maximum Dry Weight
      4299 lb
      Maximum Height
      51.2 in
      Maximum Length
      76 in
      Maximum Width
      47.4 in
      Minimum Dry Weight
      4000 lb
      Minimum Height
      47.2 in
      Minimum Length
      73 in
      Minimum Width
      44.6 in
    • Engine
      Aspiration
      TA,TTA
      Bore
      5.7 in
      Configuration
      In-line 6, 4-Stroke-Cycle Diesel
      Displacement
      1106 in³
      Emissions
      EPA Tier 3, IMO II, EU Stage IIIA
      Rotation from Flywheel End
      Counterclockwise
      Speed Range
      2100-2300 rpm
      Stroke
      7.2 in
    • Ratings
      Power Range
      814-1015 mhp, 803-1001 bhp, 599-747 bkW
    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
    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
    • Flywheel Housing, SAE No. 0
    • Flywheel, 18 inch, 136 teeth
    • SAE standard rotation
    • 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:
    • Front and top service oil filler locations
    • Front service dipstick
    • Oil pump, gear driven
    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
    • Engine is certified to D2/E2 emissions cycles
    • CERTIFIED TO 2013 EPA TIER 3 AND IMO II MARINE COMMERCIAL PROPULSION (E3 CYCLE) EMISSION STANDARDS
    • CERTIFIED TO EU STAGE IIIA AND CCNR STAGE II (E3 CYCLE) EMISSIONS STANDARDS.
    • NOTE: Ratings listed below can also be used in Recreational / Pleasure Craft applications.
    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 contro
    • Engine Protection Mode for extended ambient conditions - EPA Tier 3 Ratings Only
    • Torque Limiting functionality for WOSR ratings only
    • 70-pin customer connector
    • Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA +/-
    EXHAUST SYSTEM
    • Dry Elbows
    • Water-Cooled Elbows
    • Flexible Fitting
    • Flange
    • Muffler
    • Muffler Spark Arresting
    CHARGING SYSTEM
    • Battery Chargers
    • Charging Alternators
    • Alternator Mounting Group
    • Ammeter
    CONTROL SYSTEM
    • MECP I
    • CATERPILLAR ALARM AND PROTECTION
    COOLING SYSTEM
    • AUX EXPANSION TANK FLANGE KIT
    FUEL SYSTEM
    • Duplex Fuel Filters
    • Flexible Fuel Lines
    • Fuel Cooler
    • Primary Fuel Filters
    INSTRUMENTATION
    • Instrument Panels
    • OEM Wiring Harness
    • Engine to Engine Harness
    • Gauges
    • Transmission Sensors
    • Oil Level Sensor
    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 VIBRATION ANALYSIS
    • Crankshaft Pulleys
    • Front Stub Shaft
    • Hydraulic Pump Drive Adapter
    • Front Enclosed Clutch
    PROTECTION SYSTEM
    • Marine Classification Society and SOLAS
    • Marine Classification Society and Fire Resistance
    STARTING SYSTEM
    • STARTING SYSTEM Electric Starting Motors - Single 24 Volt
    • Air Starting Motor
    • Air Start Accessories
    • Starting Aids - JW Heaters
    • Battery Sets - 24 Volt - Dry