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.

Get a Quote

    • Dimensions & Weights
      Maximum Height
      91.9 in
      Maximum Length
      125.4 in
      Maximum Width
      81.9 in
      Minimum Dry Weight
      18025 lb
      Minimum Height
      91.9 in
      Minimum Length
      104.2 in
      Minimum Width
      71.2 in
    • Engine Specifications
      Aspiration
      TTA
      Bore
      6.69 in
      Configuration
      Vee 12, 4-Stroke-Cycle Diesel
      Displacement
      3574 in³
      Emissions
      U.S. EPA Tier 4 Final, IMO III
      Rotation from Flywheel End
      Counterclockwise
      Speed Range
      1600-1800 rpm
      Stroke
      8.46 in
    • Power Rating
      Power Range
      1341-2549 bhp (1000-1901 bkW)
    Air Inlet System
    • Corrosion-resistant aftercooler core
    Control System
    • Dual A5 engine control modules with electronic unit injection and low pressure fuel system
    Exhaust System
    • Dual turbochargers with water-cooled bearings and heat shields
    General
    • Vibration damper and guard
    • Meets SOLAS regulations
    Fuel System
    • Duplex Fuel and Oil Filtration
    Cooling System
    • Auxiliary fresh water pump
    • Gear Driven, centrifugal jacket water pump with 40% more capacity