New CAT Equipment

Cat® C18 Diesel Engine

On construction sites and mining operations, in agriculture and forestry, and in a wide range of industries, Cat® C18 Industrial Diesel Engines deliver the power, performance and durability to take on the biggest challenges. More importantly, they're backed by the world-class Cat dealer network ready to service and support every Cat® industrial engine. Industries and applications powered by C18 engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Cranes, Dredgers, Forestry, General Industrial, Hydraulic Power Units, Irrigation Equipment, Material Handling, Mining, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Surface Hauling Equipment and Trenchers. This information about Emissions describes the particular rating's emissions technology. For more information about emissions certification, please contact your local Cat dealer.

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    Learn more about the Cat® C18 Diesel Engine


    Product Specs

    Power Rating

    Maximum Power 800 HP
    Maximum Torque 2736 lb-ft @ 1300 rpm
    Rated Speed 1800-2000
    Minimum Power 575 HP

    Emission Standards

    Emissions EU Stage V


    Engine Configuration In-Line 6
    Bore 5.7 in
    Stroke 7.2 in
    Displacement 1104.5 in³
    Compression Ratio 16.0:1
    Aspiration Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
    Combustion System Direct Injection
    Rotation from Flywheel End Counterclockwise
    Aftertreatment DOC or DOC+DPF+SCR

    Engine Dimensions - Approximate

    Length 56.6 in
    Width 44.6 in
    Height 53.4 in
    Weight - Net Dry - Basic Operating Engine Without Optional Attachments 3785 lb

    Aftertreatment Dimensions

    Length 45.4 in
    Width 43.8 in
    Height 25.7 in
    Weight 600 lb

    Aftertreatment Dimensions*

    Diameter 14 in

    PETU Dimensions - Tier 4 Final Only

    Length 33.6 in
    Width 11.3 in
    Height 21.7 in
    Weight 42.8 lb
    Volume Capacity 51.1 qt (US)