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Auxiliary Engines

Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications. From tugs and container vessels to yachts and sport fishers, Cat and MaK engines have demonstrated their efficiency countless times. With remarkable reliability and durability, these engines will exceed your expectations for decades.

3516E Marine Auxiliary Engine (U.S. EPA Tier 4 Final)

The 3516E 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 EPA Tier 4 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.

  • Specification Summary

  • Power Range 787-3175 bhp (587-2368 bkW)
  • Aspiration TA
  • Emissions U.S. EPA Tier 4 Final, IMO III
  • Stroke 215 mm

Product Details

Power Rating

Power Range 787-3175 bhp (587-2368 bkW)

Engine Specifications

Aspiration TA
Emissions U.S. EPA Tier 4 Final, IMO III
Stroke 215 mm
Displacement 78 l
Configuration Vee 16, 4-Stroke-Cycle Diesel
Bore 170 mm
Rotation from Flywheel End Counterclockwise

Dimensions & Weights

Minimum Width 1850 mm
Dry Weight 10006 kg
Height 2309 mm
Length 3724 mm
Maximum Width 2230 mm
  • Air Inlet System
    •  Corrosion-resistant aftercooler core
  • Control System
    •  Dual A5 engine control modules with electronic unit injection and low pressure fuel system
  • Dual A5 engine control modules with electronic unit injection and low pressure fuel system
    • Cooling System
      •  Auxiliary fresh water pump
      •  Gear Driven, centrifugal jacket water pump with 40% more capacity
    • Exhaust System
      •  Dual turbochargers with water-cooled bearings and heat shields
    • Dual turbochargers with water-cooled bearings and heat shields
      • Fuel System
        •  Duplex Fuel and Oil Filtration
      • Duplex Fuel and Oil Filtration
        • General
          •  Vibration damper and guard
          •  Meets SOLAS regulations
        • 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

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