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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 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.






Spec Value
Power Range 787-3175 bhp (587-2368 bkW) 787-3175 bhp (587-2368 bkW)
Spec Value
Aspiration TA TA
Emissions U.S. EPA Tier 4 Final, IMO III U.S. EPA Tier 4 Final, IMO III
Stroke 8.46 in 215 mm
Displacement 4765 in³ 78 l
Configuration Vee 16, 4-Stroke-Cycle Diesel Vee 16, 4-Stroke-Cycle Diesel
Bore 6.69 in 170 mm
Rotation from Flywheel End Counterclockwise Counterclockwise
Spec Value
Minimum Width 72.8 in 1850 mm
Dry Weight 22060 lb 10006 kg
Height 90.9 in 2309 mm
Length 146.6 in 3724 mm
Maximum Width 87.9 in 2230 mm

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

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

Fuel System

  • Duplex Fuel and Oil Filtration


  • Vibration damper and guard
  • Meets SOLAS regulations

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