3516C Marine Propulsion Engine

The 3516C propulsion engine is available with a wide range of ratings that meet IMO II regulations without any additional aftertreatment. These engines provide efficient operation with electronic governing, cold mode start strategy, and programmable low idle to minimize fuel consumption. The 3516C engine also incorporates a closed crankcase ventilation system to lower emissions.

Complete Solution for Your Marine Application'

• Single-source for support and service • Industry-leading warranty coverage for factory packaged components • Global dealer network for service in any location

Efficient Operation

• Instrument panel with cold mode start strategy and programmable low idle • Electronic governing control unit minimizes fuel consumption and monitors engine operating parameters • Optional alarm and protection system

Improved Performance and Function

• Standard marine twin turbocharger configuration. • More reserved power for superior part load performance at continuous ratings • Turbos tuned for high power and excellent fuel consumption

Environmentally Conscious

• Closed crankcase ventilation system and redesigned piston for improved efficiency and lower emissions • Optimal nozzle geometry and electronic injection control for improved fuel delivery • EPA Marine Tier 3/IMO Tier II Emissions Compliant

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.

Additional information

Offering Type

Power Rating - Power Range

1650-3386 bhp (1230-2525 bkW)

Engine Specifications - Speed Range

1200-1800 rpm

Engine Specifications - Emissions


Engine Specifications - Aspiration


Engine Specifications - Bore

215.0 mm ( 8.46 in )

Engine Specifications - Stroke

170.0 mm ( 7.48 in )

Engine Specifications - Displacement

78 l ( 4765 in³ )

Engine Specifications - Rotation from Flywheel End

Counterclockwise or clockwise

Engine Specifications - Configuration

Vee 16, 4-Stroke-Cycle Diesel

Dimensions & Weights - Minimum Dry Weight

7961.0 kg ( 17550.0 lb )

Dimensions & Weights - Minimum Length

3637.0 mm ( 143.1 in )

Dimensions & Weights - Maximum Length

3761.0 mm ( 148.0 in )

Dimensions & Weights - Minimum Height

1967.0 mm ( 77.4 in )

Dimensions & Weights - Maximum Height

2150.0 mm ( 84.6 in )

Dimensions & Weights - Minimum Width

2037.0 mm ( 80.2 in )

Dimensions & Weights - Maximum Width

2142.0 mm ( 84.3 in )

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