Power Rating
| Power Range | 404 - 803 hp 404 - 803 hp |
| Minimum Rating | 404 BHP 465 bkW |
| Maximum Rating | 803 BHP 599 bkW |
Account
If you already have an existing account with another Cat App, you can use the same account to sign in here
One Account. All of Cat.
Your Caterpillar account is the single account you use to log in to select services and applications we offer. Shop for parts and machines online, manage your fleet, go mobile, and more.
Welcome Back!
My Account Dashboard
Account Information
Site Settings
Security
Auxiliary Engines C18
Request A Price Find DealerKey Specs
- Power Range
- 404 - 803 hp
- 404 - 803 hp
- Frequency
- 50 / 60
- 50 / 60
- Emissions
- IMO II/III, EPA T 3, EU IWW, EU Stage V, China II
- IMO II/III, EPA T 3, EU IWW, EU Stage V, China II
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 EPA Tier 3, IMO II/III, EU IWW, and China 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
Generator Set Specifications
| Frequency | 50 / 60 50 / 60 |
Engine Specifications
| Emissions | IMO II/III, EPA T 3, EU IWW, EU Stage V, China II IMO II/III, EPA T 3, EU IWW, EU Stage V, China II |
| Aspiration | TA, TTA TA, TTA |
| 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 |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
Dimensions & Weights
| Length | 73 in 1854 mm |
| Height | 51.2 in 1300 mm |
| Dry Weight | 1950 lb 4299 kg |
| Width | 44.6 in 1134 mm |
C18 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)
- Programmable ECM Shutdowns for: High Jacket Water Coolant Temp Low Engine Oil Pressure Engine Overspeed
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: Deep 500 hour oil change interval, Shallow 250 hour oil change interval
- Front and top service oil filler locations
- Front service dipstick
- Oil pump, gear driven
MOUNTING SYSTEM
- Front support - adjustable
POWER TAKE-OFFS
- Poly-V groove for alternator drive
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 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 24 Volt 70/105 AMP
- Alternator Mounting Group
- Ammeter
CONTROL SYSTEM
- MECP I - Marine Engine Control Panel
- Caterpillar Alarm and Protection
- Load Sharing Attachment
COOLING SYSTEM
- Aux Expansion Flange Kit
FUEL SYSTEM
- Duplex Fuel Filters
- Fuel Cooler
- Fuel Water Separator
- Flexible Fuel Lines
INSTRUMENTATION
- Instrument Panels
- OEM Wiring Harness
- Exhaust Temp Sensor
- 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 Motor - Single 24 Volt
- Air Starting Motor
- Air Start Accessories
- Starting Aids - JW Heaters 120/240V
- Battery Sets - 24 Volt - Dry
MOUNTING SYSTEM
- Front Support
- Rear Support
PACKING
- Engine Protective Cover
- Storage Preservation
- Export Packing
assignment Product Brochures and More Are Ready to Download!
Caterpillar product brochures and other informational documents are available for your growing business.
See how C18 compares against frequently compared products.
Marine Power Systems
C18
Selected
- Power Range
- 404 - 803 hp
- 404 - 803 hp
- Frequency
- 50 / 60
- 50 / 60
- Emissions
- IMO II/III, EPA T 3, EU IWW, EU Stage V, China II
- IMO II/III, EPA T 3, EU IWW, EU Stage V, China II
Marine Power Systems
C9.3 Auxiliary Engine
- Power Range
- 218 bkW - 325 bkW
- 218 bkW - 325 bkW
- Frequency
- 50 / 60
- 50 / 60
- 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
C32
- Power Range
- 781 - 1047
- 781 - 1047
- Frequency
- 50 / 60
- 50 / 60
- Emissions
- IMO II, IMO III U.S. EPA T4, EU Stage V and China-II
- IMO II, IMO III U.S. EPA T4, EU Stage V and China-II