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Home New Commercial Propulsion Engines 3512C Propulsion Engine (IMO II)

3512C

The Cat® 3512C marine propulsion engine delivers results under hard working conditions. This engine family is designed to maximize the performance of your invested dollars with a wide range of available power ratings, standard and reverse rotation configurations, no required aftertreatment, and efficient fuel consumption. This engine is available as IMO II or China Stage II emissions compliant making it an excellent propulsion engine choice for Tug, Governmental, and other workboat applications.

Power Rating

Power Range 1281 - 2552 bhp

Engine Specifications

Speed Range 1200 - 1800 rpm
Emissions IMO II, China Stage II
Aspiration Twin Turbocharged Aspirator
Bore 6.69in
Stroke 7.48in
Stroke - HD 8.46in
Displacement 3161in³
Displacement - HD 3574in³
Rotation from Flywheel End Counterclockwise or Clockwise
Configuration V 12, 4-Stroke-Cycle Diesel

Dimensions & Weights

Length - Engine 111.1in
Maximum Length 102in
Maximum Width 80.2in
Minimum Dry Weight 14400lb
Minimum Width 80.2in
Minimum Height 75in
Minimum Length 102in
Maximum Height 75in
Maximum Dry Weight 16340lb

Standard Equipment

  • Air Inlet System
    • 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:
  • Fuel System
    • 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
    • Graphical Unit (Color Marine Power Display) for analog or digital of:
  • 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
  • Mounting System
    • Rails, engine mounting, ledge type, 203 mm x 203 mm (8 in x 8 in) or Front Trunnion
  • 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

Optional Equipment

  • Air Inlet System
    • 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
  • 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
  • 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
  • Packing
    • Shrink Wrap Protection
    • Storage Preservation with Glycol Solution/Vapor Corrosion Inhibitor
    • Export Boxing
    • Export Packaging