New CAT Equipment

3512E Marine Propulsion Engine (U.S. EPA Tier 4 Final)

The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts their operations to meet U.S. EPA Tier 4 Final and IMO III emissions standards, Caterpillar Marine has introduced a solution built to maximize performance while meeting regulations. Caterpillar's combination of a fuel-efficiency-optimized engine and a selective catalytic reduction (SCR) aftertreatment system is a solution that not only reduces NOx emissions, but can also lower a customer's owning and operating costs in the process.

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    Product Specs

    Power Rating

    Power Range 1341-2549 bhp (1000-1901 bkW)

    Engine Specifications

    Speed Range 1600-1800 rpm
    Emissions U.S. EPA Tier 4 Final, IMO III
    Aspiration TTA
    Bore 6.69 in
    Stroke 8.46 in
    Displacement 3574 inĀ³
    Rotation from Flywheel End Counterclockwise
    Configuration Vee 12, 4-Stroke-Cycle Diesel

    Dimensions & Weights

    Minimum Dry Weight 18025 lb
    Minimum Length 104.2 in
    Maximum Length 125.4 in
    Minimum Height 91.9 in
    Maximum Height 91.9 in
    Minimum Width 71.2 in
    Maximum Width 81.9 in