Power Rating
| Power Range | 404 - 660 404 - 660 |
| Minimum Rating | 404 BHP 301 bkW |
| Maximum Rating | 660 BHP 492 bkW |
Auxiliary Engines C18 IMO II
Request A Price Find DealerKey Specs
- Power Range
- 404 - 660
- 404 - 660
- Minimum Rating
- 404 BHP
- 301 bkW
- Maximum Rating
- 660 BHP
- 492 bkW
Overview
C18 auxiliary/generator set engines incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion since no sea water circulates through the aftercooler. Many other improvements on these engines also contribute to minimizing owning and operating costs. The IMO II compliant ratings are available with heat exchanger or keel cooled options. All major MCS type approvals are available from the factory.
Features At A Glance
Product Specifications for C18 IMO II
Engine Specifications
| Aspiration | TA, TTA TA, TTA |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
| Bore | 5.7 in 145 mm |
| Displacement | 1106 in³ 18.1 l |
| Configuration | In-Line 6, 4-Stroke-Cycle Diesel In-Line 6, 4-Stroke-Cycle Diesel |
| Stroke | 7.2 in 183 mm |
Dimensions & Weights
| Height | 51.2 in 1300 mm |
| Length | 73 in 1854 mm |
| Width | 44.6 in 1134 mm |
| Dry Weight | 1950 lb 4299 kg |
C18 IMO II Standard Equipment
AIR INLET SYSTEM
- Separate circuit after-cooled (SCAC)
- Open Crankcase Ventilation (OCV) system
- Turbocharger, jacket water cooled
- Turbocharger inlet, 152 mm (6 in) OD straight connection
CONTROL SYSTEM
- Programmable low idle
- Electronic diagnostics and fault logging
- Electronic fuel/air ratio control
- Engine Protection Mode for extended ambient conditions - EPA Tier 3 Ratings Only
- 70-pin customer connector
- Three types of throttle inputs (primary/ secondary PWM, 0-5V, 4-20mA
COOLING SYSTEM
- Separate Circuit After-Cooling (SCAC) for both HEX and Keel cooled engines
- Engine JW and SCAC Shell & Tube Heat Exchangers for HEX cooled engines
- SCAC pump, gear driven, for HEX cooled engines only
- Jacket water pump, gear driven
- Auxiliary water pump, gear driven
- Sea water pump, bronze impeller, gear driven
- SCAC and JW shunt tanks for maintaining proper pump inlet pressures
EXHAUST SYSTEM
- 152 mm (6 in) round flanged outlet
- Water-cooled exhaust manifold & turbocharger
FLYWHEELS & FLYWHEEL HOUSINGS
- Flywheel Housing, SAE No. 0
- Flywheel, 18 inch, 136 teeth
- SAE standard rotation
FUEL SYSTEM
- Front service simplex fuel system
- Fuel transfer pump, gear driven
- Manual fuel priming pump
- Hybrid fuel line design
LUBE SYSTEM
- Front service simplex oil system
- Center sump oil pan:
- Front and top service oil filler locations
- Front service dipstick
- Oil pump, gear driven
MOUNTING SYSTEM
- Front support - adjustable
POWER TAKE-OFFS
- Hydraulic Pump Drive
- Crankshaft Pulleys
- Front Stub Shaft
- Front Enclosed Clutch
GENERAL
- Front damper guard
- Front service engine
- Common electrical bonding point
- Engine does not ship with zinc components
- NOTE: These engines are for constant speed generator set applications only, and NOT to be used for variable speed applications
C18 IMO II Optional Equipment
EXHAUST SYSTEM
- Dry Elbows
- Water-Cooled Elbows
- Flexible Fitting
- Flange
- Muffler
- Muffler Spark Arresting
AIR INLET SYSTEM
- Air Inlet Adapter
CHARGING SYSTEM
- Battery Chargers
- Charging Alternators
- Alternator Mounting Group
- Ammeter
CONTROL SYSTEM
- MECP I - Marine Engine Control Panel
- Caterpillar Alarm and Protection
- Load Sharing Attachment
COOLING SYSTEM
- Aux Expansion Tank Flange Kit
FUEL SYSTEM
- Duplex Fuel Filters
- Fuel Cooler
- Primary Fuel Filters
- Flexible Fuel Lines
INSTRUMENTATION
- Instrument Panels
- OEM Wiring Harness
- Gauges
- Oil Level Sensor
LUBE SYSTEM
- Duplex Oil Filters
- Sump Pump
POWER TAKE-OFFS
- Crankshaft Pulleys
- Front Stub Shaft
- Hydraulic Pump Drive Adapter
- Front Enclosed Clutch
PROTECTION SYSTEM
- Marine Classification Society and SOLAS
STARTING SYSTEM
- Electric Starting Motors - Single 24 Volt
- Air Starting Motor
- Air Start Accessories
- Starting Aids - JW Heaters
- Battery Sets - 24 Volt - Dry
MOUNTING SYSTEM
- Front Support
- REAR ENGINE SUPPORT
PACKING
- Engine Protective Cover
- Storage Preservation
- Export Packing
See how C18 IMO II compares against frequently compared products.
Marine Power Systems
C18 IMO II
Selected
- Power Range
- 404 - 660
- 404 - 660
- Minimum Rating
- 404 BHP
- 301 bkW
- Maximum Rating
- 660 BHP
- 492 bkW
Marine Power Systems
C9.3 Auxiliary Engine
- Power Range
- 292 bhp - 436 bhp (218 bkW - 325 bkW)
- 292 bhp - 436 bhp (218 bkW - 325 bkW)
- Rated Engine Speed
- 1,500, 1,800 rpm
- 1,500, 1,800 rpm
- Emissions
- IMO II, IMO III, U.S. EPA Tier 3, China Stage II
- IMO II, IMO III, U.S. EPA Tier 3, China Stage II
Marine Power Systems
C18 Tier 3
- Minimum Rating
- 624 BHP
- 465 bkW
- Maximum Rating
- 803 BHP
- 599 bkW
- Aspiration
- TA, TTA
- TA, TTA
assignment Product Brochures and More Are Ready to Download!
Caterpillar product brochures and other informational documents are available for your growing business.