The C18 ACERT marine propulsion engine has ratings for recreational applications that meet U.S. EPA Tier 3, IMO II, and EU Stage IIIA Regulations. This marine engine incorporates the latest core engine system innovations to provide maximum benefits in power density, performance, emissions, and fuel efficiency. Not only is it equipped with engine monitoring and protection features, it is also compatible with Cat display and vessel control systems. With this engine comes the unmatched worldwide marine support network including Cat dealers and hundreds of authorized marine dealers. Their combined experience and expertise, products and services, backup and support allow your recreational pleasure craft to remain precisely that — a pleasure.

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Power Range 1015-1150 mhp, 1001-1136 bhp, 747-847 bkW 1015-1150 mhp, 1001-1136 bhp, 747-847 bkW

Separate circuit aftercooling system

The primary advantage of the separate circuit aftercooling system (SCAC) is that no sea water circulates through the aftercooler


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

C18 ACERT Tier 3 Recreational Standard Equipment

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  • Aftercooler - sea water, corrosion resistant
  • Air cleaner/fumes disposal (closed system)
  • Turbocharger, jacket water cooled
  • Front-down and rear-down aftercooler condensate drains

C18 ACERT Tier 3 Recreational Optional Equipment

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  • Battery Chargers
  • Charging Alternators