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Commercial Propulsion 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.

3512C Tier 3 Marine Propulsion Engine

The 3512C High Displacement marine engines are now available in a wide range of ratings that meet EPA Marine Tier 3 and IMO II regulations without any additional aftertreatment. These new propulsion, auxiliary, and DEP engines, designed and built from the current 3512C and 3516C platforms, 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 EPA Tier 3 compliance.

  • Specification Summary

  • Power Range 1340-2366 bhp (1000-1765 bkW)
  • Speed Range 1600-1800 rpm
  • Emissions EPA Tier 3, IMO II
  • Aspiration TTA

Product Details

Power Rating

Power Range 1340-2366 bhp (1000-1765 bkW)
Continuous Ratings - Maximum Power 1350 bkW
Heavy Duty Ratings - Maximum Power 1678 bkW
Maximum Continuous Ratings - Maximum Power 1765 bkW

Engine Specifications

Speed Range 1600-1800 rpm
Emissions EPA Tier 3, IMO II
Aspiration TTA
Bore 170 mm
Stroke 215 mm
Displacement 58.6 L
Rotation (from flywheel end) Counterclockwise or Clockwise
Configuration Vee 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

Minimum Dry Weight 7488 kg
Minimum Length 2465 mm
Maximum Length 2465 mm
Minimum Height 2222.6 mm
Maximum Height 2222.6 mm
Minimum Width 2037 mm
Maximum Width 2037 mm
  • Air Inlet System
    •  Separate circuit aftercooler core, corrosion resistant coated (air side)
    •  Powercore air cleaner
  • Separate circuit aftercooler core, corrosion resistant coated (air side)
    • Powercore air cleaner
      • Control System
        •  Dual Caterpillar A4 Electronic Engine Control with Electronic Unit Injector Fuel System
        •  Rigid Wiring Harness (10 amp DC power required to drive Electronic Engine Control Module)
      • Exhaust System
        •  3500C engines:
      • 3500C engines:
        • Fuel System
          •  Fuel transfer pump
          •  Electronically Controlled Unit Injectors
        • Fuel transfer pump
          • Electronically Controlled Unit Injectors
            • Instrumentation
              •  Electronic service meter, instrument panel (24V), start/stop switch, emergency stop button, maintenance due light, diagnostic light, warning light, maintenance clear switch, start motor magnetic switch, 15 and 3A breakers
            • Lube System
              •  Crankcase breather groups, Top mounted
              •  Oil filler and dipstick, LH or RH
              •  Oil pump, gear type
              •  250 or 1000 hour sump oil pan
            • Crankcase breather groups, Top mounted
              • Oil filler and dipstick, LH or RH
                • Oil pump, gear type
                  • 250 or 1000 hour sump oil pan
                    • Mounting System
                      •  3500C engines:
                    • Power Takeoffs
                      •  Accessory drives: Lower RH, lower LH
                      •  Front housing, two-sided
                    • Protection System
                      •  A4 Electronic Monitoring System provides customer programmable engine derating strategies to protect against adverse operating conditions
                      •  Emergency stop push button (located in Electronic Instrument Panel)
                      •  Safety shutoff protection:
                    • General
                      •  Vibration damper and guard
                      •  Lifting eyes
                      •  NOTE: Engines for heat exchanger cooling do NOT include heat exchange
                    • Flywheel and Flywheel Housing
                      •  Flywheel, SAE No. 00, 183 teeth
                      •  Flywheel housing, SAE No. 00
                    • Cooling System
                      •  Oil cooler
                      •  Thermostats and housing, Full open temperature 92 C (198 F)
                      •  Jacket water pump, gear driven, centrifugal
                      •  Auxiliary fresh water pump
                      •  Aftercooler system: If using glycol, up to maximum 20% glycol concentration is allowed
                    • Oil cooler
                      • Thermostats and housing, Full open temperature 92 C (198 F)
                        • Jacket water pump, gear driven, centrifugal
                          • Auxiliary fresh water pump
                            • Aftercooler system: If using glycol, up to maximum 20% glycol concentration is allowed
                              • Instrumentation
                                •  Graphical Unit (Color Marine Power Display) for analog or digital of:
                              • Graphical Unit (Color Marine Power Display) for analog or digital of:
                                • Air Inlet System
                                  •  Air Inlet Adapters
                                • Air Inlet Adapters
                                  • Charging System
                                    •  Battery Chargers
                                    •  Charging Alternator
                                  • Control System
                                    •  Throttle Control
                                  • Cooling System
                                    •  Coolant Shunt Tank
                                    •  Cooling System Options
                                  • Exhaust System
                                    •  Flexible Fittings
                                    •  Elbows
                                    •  Flanges
                                    •  Flange and Exhaust Expanders
                                    •  Mufflers
                                  • Fuel System
                                    •  Fuel Cooler Heat Exchanger - Sea Water
                                    •  Primary Fuel Filter
                                    •  Fuel Level Switch
                                    •  Rigid Fuel Lines
                                    •  Flexible Fuel Lines
                                  • Fuel Cooler Heat Exchanger - Sea Water
                                    • Primary Fuel Filter
                                      • Fuel Level Switch
                                        • Rigid Fuel Lines
                                          • Flexible Fuel Lines
                                            • Instrumentation
                                              •  Communication Modules
                                              •  Color Marine Power Display System
                                              •  Pilot House Instrument Panels
                                              •  Marine Gear Sensors
                                            • Lube System
                                              •  Sump Pumps
                                              •  Lubricating Oil
                                            • Power Take-Offs
                                              •  Stub Shafts
                                              •  Crankshaft Pulleys
                                              •  Damper Guard
                                              •  Flexible Coupling and Guards
                                            • Marine Society Requirements
                                              •  Green Passport Documentation
                                              •  Spray Shielding
                                            • Protection System
                                              •  Shutoff and Alarm Contactors
                                            • Spare Parts Kits
                                              • Special Appearance Packages
                                                •  Special Appearance Packages with Chrome Covers
                                                •  Yacht Class Finish
                                              • Starting System
                                                •  Air Starting Motor Options
                                                •  Battery Sets - 24 Volt - Dry
                                                •  Battery Rack
                                              • Mounting System
                                                •  Engine Supports
                                                •  Vibration Isolation Mountings
                                              • Transitional Vibration Analysis
                                                • Paints
                                                  •  Paint Color Options
                                                • Paint Color Options
                                                  • Packing
                                                    •  Shrink Wrap Protection
                                                    •  Storage Preservation with Glycol Solution/Vapor Corrosion Inhibitor
                                                    •  Export Boxing
                                                    •  Export Packaging
                                                  Built for it