3516C IMO II


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The 3516C High Displacement marine engines are now available in a wide range of ratings that meet IMO II emissions regulations. This new propulsion, auxiliary, and DEP engines, designed and built from the current 3516C platform, have minimal dimensional and weight changes in comparison. Owning and operating costs are also very similar. For the specific fuel consumption of each rating please refer to the performance data. New features include stainless steel exhaust heat shields, closed crankcase ventilation system, and IMO II emissions compliance.

Power Rating

Power Range 1650-3386 bhp (1230-2525 bkW) 1650-3386 bhp (1230-2525 bkW) Less
Continuous Ratings - Maximum Power 2000.0 bhp 1492.0 bkW Less
Heavy Duty Ratings - Maximum Power 2100.0 bhp 1566.0 bkW Less
Maximum Continuous Ratings - Maximum Power 2200.0 bhp 1641.0 bkW Less

Engine Specifications

Speed Range 1200-1800 rpm 1200-1800 rpm Less
Emissions IMO II IMO II Less
Aspiration TTA TTA Less
Bore 6.69 in 190.0 mm Less
Stroke 7.48 in 170.0 mm Less
Displacement 4211.0 in3 69.0 L Less
Rotation (from flywheel end) Counterclockwise or clockwise Counterclockwise or clockwise Less
Configuration Vee 16, 4-Stroke-Cycle Diesel Vee 16, 4-Stroke-Cycle Diesel Less

Dimensions & Weights

Minimum Dry Weight 17550.0 lb 7961.0 kg Less
Minimum Length 143.1 in 3637.0 mm Less
Maximum Length 148.0 in 3761.0 mm Less
Minimum Height 77.4 in 1967.0 mm Less
Maximum Height 84.6 in 2150.0 mm Less
Minimum Width 80.2 in 2037.0 mm Less
Maximum Width 84.3 in 2142.0 mm Less

Engine-Mounted Instrument Panel

• Integrated MPD display for quick responseand effective local control• Optional local speed control• Optional individual cylinder exhausttemperature scanner with data link for remotemounting• Local E-stop, warning indicators, horn• Plug & Run connections allow mounting onport or starboard side of engine

Marine Power Display (MPD)

• Graphic display of engine operatingparameters in analog, digital, or bar-chartformat• Rugged weatherproof construction• Fully user-configured display screens• Marine classification society-type approved• Diagnostic messages and alarms• Three-tier prioritization of events anddiagnostics• Multilingual capability• Night-mode LCD display• ISO symbols for parameter identification

High Capacity High Efficiency Turbos

• Standard marine twin turbochargerconfiguration.• More reserved power for superior part loadperformance at continuous ratings• Turbos tuned for high power and excellentfuel consumption

Engine-Mounted Cat® Plate-Type Heat Exchanger (not available at first production)

• Separate Circuit Aftercooled (SCAC)• Single heat exchanger for both jacket waterand aftercooler systems• Single inlet and outlet connections for seawater• Lightweight and compact• Factory-installed piping and connections

Rigid Wiring Harness

• Highly durable: long service life• Flexibility for custom wire additions• Lined with fire retardant foam• Cost efficient replacement for premium wiring• Marine classification society approved

Power Distribution Box

• Isolates “control power” fromalternator/starter/jacket water heater power• Mountable off engine• Allows end user to choose up to threeindependent power sources• Has built-in circuit breakers and switches foreasy troubleshooting

Marine Classification Society Approvals


Electronic Features

• 3D histogram data of engine operation (load,speed, time)• Load feedback signal for CPP operation• Electronic torque limit for re-power andtorque limited application equipment• Programmable droop• Adjustable governor gains• Condition-based maintenance• Monitoring features• Serial data bus communications• Primary and secondary A3 controllers on allpropulsion engines

Cat Pilot House Panels

• Cat pilot house panels with or without MarinePower Display (MPD)• Easily connected to the engine customerconnector• Ability to have full function helm panels andreduced function wing panels

Unit Injectors

• Caterpillar designed and built system• “Drop-in” installation • No threaded fuel connections• High pressure only inside injector does notrequire double wall lines or leak collectiondevices

Power Take-off

• Power take-off adapters available • Auxiliary drives for power take-offs forhydraulic pumps and compressors

Engine-Mounted Gear-Driven Pumps

• Standard engine-mounted aftercooler pump • Standard engine-mounted jacket water pump• Optional engine-mounted, gear-driven, highcapacity sea water pump

Engine Mounting System

• Rigid mounting points• Optional resilient mounting

In-Hull Overhaul

• Easily removable side covers• Accessible bearing caps

3516C IMO II Standard Equipment

Air Inlet System
  • Corrosion resistant separate circuit freshwater aftercooled, powercore air cleaner

Control System
  • Dual Caterpillar® A3 Electronic Control Unit (ECU) LH with electronic unit injector fuel system rigid wiring harness (10 amp DC power required to drive ECU)

Cooling System
  • Gear-driven centrifugal auxiliary sea water pump, geardriven centrifugal jacket water pump, expansion tank for commercial engines, coolant shunt tank on lightweight engines, engine oil cooler, thermostats and housing.

ECU Functions
  • Programmable low idle, SAEJ1939 data link, Cat®data link, engine diagnostics, general alarm relay, programmable parameters (system application and tattletales), Caterpillar ET service tool interface, remote shutdown, shutdown notify, load feedback, overspeed shutdown, overspeed verify

Exhaust System
  • Dry gas-tight exhaust manifolds with heat shields, dual turbochargers with watercooled bearings and heat shield. Wastegate on select ratings

Fuel System
  • Electronically controlled unit injectors, simplex fuel filter (RH) with service indicators, fuel transfer pump

  • Marine Power Display of: Engine oil pressure, engine water temperature, fuel pressure, engine speed, fuel consumption, overspeed shutdown notification light, prelube and shutdown override

Lube System
  • Gear-driven pump, top-mounted dual crankcase breather groups, simplex oil filter, oil filler and dipstick

Power Take-Offs
  • Accessory drive, two-sided front housing

Protection System
  • Emergency stop pushbutton, safety shutoff, oil pressure, and water temperature

  • Two lifting eyes mounted to cylinder heads, Caterpillar yellow paint, parts books and maintenance manuals, shrink-wrap.

ISO Certification
  • Factory-designed systems built at Caterpillar ISO 9001:2000 certified facilities.

3516C IMO II Optional Equipment

Air Inlet System
  • Air Cleaner Removal
  • Remote Air Inlet Adapters

Charging System
  • Battery Chargers
  • Charging Alternators

Control System
  • Throttle Position Sensor
  • Throttle Synchronization

Cooling System
  • Water Level Switch Gauge
  • Coolant Level Sensors
  • Connections
  • Keel Cooling Conversions
  • Heat Exchangers
  • Auxiliary Water Pumps
  • Sea Water Pump Removal
  • Coolant Shunt Tanks
  • Air Separator
  • Marine Gear Cooling

Exhaust System
  • Exhaust Outlet
  • Flexible Fittings
  • Elbows
  • Flanges
  • Flange and Exhaust Expanders
  • Mufflers

Fuel System
  • Fuel Cooler
  • Fuel Priming Pumps
  • Flexible Fuel Lines
  • Rigid Fuel Lines
  • Primary Fuel Filter
  • Fuel level switch

  • PL1000T Communication Module
  • PL1000E Communication Module
  • Customer Interface
  • Thermocouples
  • Remote Panel Display
  • Remote Cylinder Temperature Display
  • Pilot House Instrument Panels
  • Marine Gear Sensors
  • Engine Vision Display System

Lube & Fuel System

Lube System
  • Oil Pan
  • Oil Pan Accessories
  • Sump Pumps
  • Prelubrication Options
  • Lubricating Oil

Mounting System
  • Engine Supports
  • Vibration Isolation Mountings

Power Take-Offs
  • Flexible Coupling and Guards
  • Front Housing Accessories
  • Upper Left Hand Front Location:
  • Upper Right Hand Front Location:
  • Upper Right Hand Rear Location:
  • Lower Left Hand Front Location:
  • Lower Left Hand Rear Location:
  • Front Housing Accessory Drives
  • Upper LH Accessory Drive
  • Upper RH Accessory Drive
  • Front Power Take Offs
  • Crankshaft Pulleys
  • Damper Guard Removals

Protection System
  • Air Inlet Shutoffs
  • Switches and Contactors
  • Explosion Relief Valve
  • Sensors

Spare Parts Kits
  • Parts Kits
  • Pump Kits
  • Fuel Transfer
  • Lube Oil

Special Appearance
  • Chrome Plated Relief Valves
  • Black Air Cleaners

Starting System
  • Starting Motors or Barring Device
  • Air Starting Motors Options
  • Starting Aids
  • Battery Sets - 24 Volt - Dry
  • Battery Rack

  • Tool Set
  • Caterpillar Datalink Wire

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Extended Warranty and Support

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