Separate Circuit Aftercooling System

C18 ACERT commercial propulsion engines now incorporate a separate circuit aftercooling system (SCAC) for all configurations with A through D ratings


EPA Tier 3 Compliant, IMO II and EU IWW compliant

Cooling System

Heat exchanger and Keel cooled options for all ratings

Turbo Configurations

Single turbo configurations for all ratings

Competitive size and weight

Marine Certifications

All major MCS type approvals available from factory

The C18 ACERT marine propulsion engine has commercial application ratings of 475-725 mhp (469-715 bhp) at 1800-2100 rpm that meet U.S. EPA Tier 3, IMO II, and EU IW 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
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Power Range 469-1001 bhp (350-747 bkW) 469-1001 bhp (350-747 bkW)

C18 ACERT Tier 3 Standard Equipment

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  • Separate circuit after-cooled (SCAC)
  • Open Crankcase Ventilation (OCV) system
  • Turbocharger, jacket water cooled
  • Turbocharger inlet, 152 mm (6 in) OD straight connection

C18 ACERT Tier 3 Optional Equipment

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  • Dry Elbows
  • Water-Cooled Elbows
  • Flexible Fitting
  • Flange
  • Muffler
  • Muffler Spark Arresting