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3512E Marine Auxiliary/DEP Engine (U.S. EPA Tier 4 Final)

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    The 3512E marine auxiliary 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.

    Pricing: Contact for Pricing

    Request a New Equipment Quote

    Fill out this form below and we will get back to you within 1 to 2 business days! Alternatively, give us a call at 833-286-3561


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      The 3512E marine auxiliary 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.

      Pricing: Contact for Pricing

      Request a New Equipment Quote

      Fill out this form below and we will get back to you within 1 to 2 business days! Alternatively, give us a call at 833-286-3561


        This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

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        Power Range 1263 - 1789 bkW
        Frequency 50 / 60
        Aspiration Turbocharged - Aftercooled
        Bore 6.69in
        Configuration V 12, 4-Stroke-Cycle Diesel
        Displacement 3574in³
        Emissions U.S. EPA Tier 4, IMO II/III
        Rotation from Flywheel End Counterclockwise
        Stroke 8.46in
        Height 86.8in
        Minimum Length 104.2in

        Standard Equipment:

        • Corrosion-resistant aftercooler core
        • Dual A5 engine control modules with electronic unit injection and low pressure fuel system
        • Dual turbochargers with water-cooled bearings and heat shields
        • Vibration damper and guard
        • Meets SOLAS regulations
        • Duplex Fuel and Oil Filtration
        • Auxiliary fresh water pump
        • Gear Driven, centrifugal jacket water pump with 40% more capacity

        Optional Equipment:

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