Propulsion engines
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 Range | 1281 - 2552 bhp |
|---|
| Speed Range | 1200 - 1800 rpm |
|---|---|
| Emissions | IMO II, China II |
| Aspiration | Twin Turbocharged Aspirator |
| Bore | 6.69 in |
| Stroke | 7.48 in |
| Stroke - HD | 8.46 in |
| Displacement | 3161.0 in³ |
| Displacement - HD | 3574.0 in³ |
| Rotation from Flywheel End | Counterclockwise or Clockwise |
| Configuration | V 12, 4-Stroke-Cycle Diesel |
| Maximum Length | 102.0 in |
|---|---|
| Maximum Width | 80.2 in |
| Minimum Dry Weight | 14400.0 lb |
| Minimum Width | 80.2 in |
| Minimum Height | 75.0 in |
| Minimum Length | 102.0 in |
| Maximum Height | 75.0 in |
| Maximum Dry Weight | 16340 lb |
| Length - Engine | 111.1 in |
Air Inlet System
- Separate circuit aftercooler core, corrosion resistant coated (air side)
- Powercore air cleaner
Control System
- Dual Caterpillar A6 Electronic Engine Control with Electronic Unit Injector Fuel System
- Rigid Wiring Harness (20 amp DC power required to drive Electronic Engine Control Module)
Exhaust System
- 3500C engines:
Fuel System
- Fuel transfer pump
- Electronically Controlled Unit Injectors
- Duplex Fuel Filters
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 / 500 / 1000 hour sump oil pan options
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
- A6 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, 183 teeth
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
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Download ↓3512C Commerical Prop Engine Spec sheet (1281 - 2552 bhp)
Need installed dimensions with enclosure and tank? See Model Configurations