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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Power Range
1341-2549 bhp (1000-1901 bkW)
Speed Range
1600-1800 rpm
Emissions
U.S. EPA Tier 4 Final, IMO III
Aspiration
TTA

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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
6.69in
Stroke
8.46in
Displacement
3574.0in3
Rotation (from flywheel end)
Counterclockwise
Configuration
Vee 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

Minimum Dry Weight
18025.0lb
Minimum Length
104.2in
Maximum Length
104.2in
Minimum Height
91.9in
Maximum Height
91.9in
Minimum Width
71.2in
Maximum Width
81.9in

Standard/Optional Features

Standard Equipment:

  • 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

Optional Equipment:

  • Plate-type heat exchanger with integrated SCAC and JW Water expansion tanks
  • Special appearance packages with chrome covers
  • Marine society certifications
  • Power take-off
  • Certified marine alarm and protection safety system
  • Standard instrument panel with color touchscreen display
  • Mounting rails and trunnion mount options
  • Engine mounted fuel cooler (SCAC Water Cooled)
  • Sea water pump with 25% more capacity for cooling auxiliary vessel equipment
  • Closed crank case ventilation