The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings (including High Displacement ratings), no required aftertreatment technology, and nominal rated BSFC fuel consumption – it will drive down your total cost of ownership. With a redesigned piston bowl shape to improve combustion, and improved fuel delivery, this engine is IMO II or China Stage II emissions compliant and committed to sustainable environmental development. Single-source support, the Caterpillar warranty, and industry-leading one-year warranty on parts make the 3512C a fully integrated marine power solution.
Caterpillar
3512C
Photos
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3512C IMO II Commercial Propulsion Engines
Documents
Features
Specifications
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Power Rating
Spec Value Power Range 1281 - 2552 bhp -
Engine Specifications
Spec Value Speed Range 1200 - 1800 rpm Emissions IMO II, China Stage II Aspiration Twin Turbocharged Aspirator Bore 6.69 in Stroke 7.48 in Stroke - HD 8.46 in Displacement 3161 in³ Displacement - HD 3574 in³ Rotation from Flywheel End Counterclockwise or Clockwise Configuration V 12, 4-Stroke-Cycle Diesel -
Dimensions & Weights
Spec Value Maximum Length 102 in Maximum Width 80.2 in Minimum Dry Weight 14400 lb Minimum Width 80.2 in Minimum Height 75 in Minimum Length 102 in Maximum Height 75 in Maximum Dry Weight 16340 lb Length - Engine 111.1 in
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
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