Cat C18 ACERT Propulsion Engine (Tier 3)

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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.

Pricing: Contact for Pricing

Power Range 454 - 1136 bhp (339 - 847 bkW)
Aspiration Turbocharged - Aftercooled
Bore 5.7in
Configuration In-line 6, 4-Stroke-Cycle Diesel
Cooling Heat Exchanger or Keel Cooled
Displacement 1106in³
Emissions U.S. EPA Tier 3 Commercial, IMO II, EU IWW, EU Stage V, China II
Flywheel Housing SAE No. 0 (136 teeth) or SAE No. 1 (113 teeth)
Governor Electroinc
Oil Change Interval 250 / 500
Refill Capacity 49 / 68 l
Rotation from Flywheel End Counterclockwise
Speed Range 1500 - 2100 rpm
Stroke 7.2in
Maximum Height 51.2in
Maximum Width 47.4in
Minimum Dry Weight 4000lb
Minimum Height 47.2in
Minimum Length 73in
Minimum Width 44.6in

Standard Equipment:

  • 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
  • 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
  • Water-cooled exhaust manifold & turbocharger
  • 152 mm (6 in) round flanged outlet
  • SAE No. 0, Flywheel SAE. 18, 136 teeth
  • SAE No. 1, Flywheel: 14 inch, 113 teeth
  • Front service simplex fuel system
  • Fuel transfer pump, gear driven
  • Manual fuel priming pump
  • Hybrid fuel line design
  • 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
  • Front support - adjustable
  • Poly-V groove for alternator drive
  • NOTE: There are no standard power take-offs available
  • Front damper guard
  • Front service engine
  • Common electrical bonding point
  • Engine does not ship with zinc components
  • 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
  • Torque Limiting functionality for WOSR ratings only
  • 70-pin customer connector
  • Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA +/-

Optional Equipment:

  • Dry Elbows
  • Water-Cooled Elbows
  • Flexible Fitting
  • Outlet Flange
  • Muffler
  • Muffler Spark Arresting
  • Air Inlet Adapter
  • Battery Chargers
  • Charging Alternators
  • Alternator Mounting Group
  • Ammeter
  • MECP-I
  • CAT Alarm and Protection
  • Aux expansion tank flange kit
  • Exhaust Temp Sensor
  • Heat Exchanger Pressure Sensor
  • Duplex Fuel Filters
  • Flexible Fuel Lines
  • Fuel Cooler
  • Fuel/Water Separator
  • Instrument Panels
  • OEM Wiring Harness
  • Engine to Engine Harness
  • Transmission Sensors
  • Oil Level Sensor
  • Digital Tachometer
  • Duplex Oil Filters
  • Transmission Oil Cooler
  • Sump Pump
  • Vibration Isolators
  • Front Support
  • Rear Support
  • NOTE: PTO options require torsional vibrations analysis
  • Crankshaft Pulleys
  • Front Stub Shaft
  • Hydraulic Pump Drive Adapter
  • Front Enclosed Clutch
  • Marine Classification Society and SOLAS
  • 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
  • Engine Protective Cover
  • Storage Preservation
  • Export Packing

What Our Customers Are Saying About Us

Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.
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