New CAT Equipment

Cat C18 ACERT High Performance Propulsion Engine (Tier 3 Recreational)

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.

Get a Quote

    Product Specs


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


    Speed Range 2300 rpm
    Emissions EPA Tier 3, IMO II, EU IW
    Aspiration TA,TTA
    Bore 5.7 in
    Stroke 7.2 in
    Displacement 1106 in³
    Rotation from Flywheel End Counterclockwise
    Configuration In-line 6, 4-Stroke-Cycle Diesel

    Dimensions & Weights

    Maximum Height 51.2 in
    Maximum Dry Weight 4299 lb
    Maximum Width 47.4 in
    Maximum Length 76 in
    Minimum Length 73 in
    Minimum Dry Weight 4000 lb
    Minimum Width 44.6 in
    Minimum Height 47.2 in