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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  • Dimensions & Weights
    Maximum Height
    92.1 in
    Maximum Length
    125.4 in
    Maximum Width
    81.9 in
    Minimum Dry Weight
    18025 lb
    Minimum Height
    91.9 in
    Minimum Length
    123.5 in
    Minimum Width
    80.2 in
  • Engine Specifications
    Approximate Weight
    12824 lb
    Aspiration
    Twin Turbocharged - Aftercooled
    Bore
    6.69 in
    Configuration
    V 12, 4-Stroke-Cycle Diesel
    Displacement
    3574 in³
    Emissions
    U.S. EPA Tier 4, IMO II/III, EU Stage V
    Oil Change Interval
    250 / 500 / 1000
    Rotation from Flywheel End
    Clockwise or Counterclockwise
    Speed Range
    1600 - 1800 rpm
    Stroke
    8.46 in
  • Power Rating
    Power Range
    1341-2550 bhp (1000-1902 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