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Inboard engine C12
propulsiondieselprofessional vessel

inboard engine
inboard engine
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inboard, propulsion
Power source
professional vessel
turbocharged, direct fuel injection
Other characteristics

Max.: 490 ch (490 hp)

Min.: 340 ch (340 hp)


Cat® C12 Diesel Marine Propulsion Engines, with ratings of 340-490 bhp (254-366 bkW) at 1800-2300 rpm, meet IMO II emission standards with the exception of the 497 mhp (490 bhp) rating at 2300 rpm which meets IMO I emissions standards. The C12 takes full advantage of the electronically controlled unit injection fuel system, resulting in an environmentally friendly engine with outstanding performance and fuel economy. There is also a wide range of optional equipment available to meet the needs of your marine commercial or pleasure craft application. POWER RATING Power Range - 340-490 bhp (254-366 bkW) ENGINE SPECIFICATIONS Speed Range - 1800-2300 rpm Emissions - IMO I, IMO II Aspiration - TA Bore - 130 mm Stroke - 150 mm Displacement - 12 l Rotation from Flywheel End - Counterclockwise Configuration - In-line 6, 4-Stroke-Cycle Diesel DIMENSIONS & WEIGHTS Width - 969 mm Length - 1574 mm Dry Weight - 1174 kg Height - 1005 mm AIR INLET SYSTEM Aftercooler - sea water; corrosion resistant, Air Cleaner/Fumes Disposal (closed system), Turbocharger, Jacket Water Cooled CONTROL SYSTEM Electronic governing, Cold mode start strategy, Power compensation for fuel temperature, Programmable low idle, Electronic diagnostics and fault logging, Engine and transmission monitoring (speed, temperature, pressure), Fuel/air ratio control, Emergency stop switch (A&B ratings only) COOLING SYSTEM Thermostat and housing, Jacket water pump; gear driven, Sea water pump; rubber impeller; self-priming; gear-driven, Integral heat exhanger/expansion tank; removable tube bundle; replaceable copper-nickel tubes, Keel cooling - combined circuit (includes pipe thread flange kit)


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.