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Caterpillar

C12 ACERT™ High Performance Propulsion Engine

Cat® C12 ACERT Diesel Marine Propulsion Engines, with ratings of 669-715 mhp (660-705 bhp) at 2300 rpm, meet IMO II emission 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 specific pleasure craft application.

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C12 ACERT High Performance
C12 ACERT High Performance

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Specifications

Spec Value
Power Range 340 - 705 bhp (254 - 526 bkW) 340 - 705 bhp (254 - 526 bkW)
Spec Value
Speed Range 1800 - 2300 rpm 1800 - 2300 rpm
Emissions IMO I, IMO II IMO I, IMO II
Aspiration TA TA
Bore 5.1 in 130 mm
Stroke 5.9 in 150 mm
Displacement 732 in³ 12 l
Rotation from Flywheel End Counterclockwise Counterclockwise
Configuration In-line 6, 4-Stroke-Cycle Diesel In-line 6, 4-Stroke-Cycle Diesel
Spec Value
Width 38.1 in 969 mm
Dry Weight 2588 lb 1174 kg
Length 62 in 1574 mm
Height 39.5 in 1005 mm

Standard Equipment

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)

Exhaust System

  • Watercooled Manifold & Turbocharger

Flywheels & Flywheel Housings

  • Flywheel; SAE No. 1; 113 teeth, Flywheel housing; SAE No. 1 (10 degree slant pad), SAE standard rotation

Fuel System

  • Fuel filer; RH service on Port; LH service on Starboard, Fuel transfer pump, Fuel priming pump, Flexible fuel lines

Lube System

  • Crankcase breather, Oil cooler, Oil filter; spin-on; RH service on Port; LH service on Starboard, Oil filler, Dipstick; RH service on Port; LH service on Starboard, Oil pump; gear driven

Mounting System

  • Front support

Power Take-Offs

  • Hydraulic pump drive; SAE A; 11 tooth spline, 57 ft-lbs max torque; counterclockwise as viewed from the rear of hte engine looking into the pump drive and turns 1.41 x engine speed, Crankshaft pulley; 345 mm (13.6 in) single groove; 15.88 mm (.63in) width

Protection System

  • Shutdown; electronic; 12 or 24 volt; energized to run

General

  • Vibration damper, Lifting eyes, RH or LH service options, Literature, Variable engine wiring, Upper rear-facing customer wiring connector and ECAP connection, Electronic installation kit (connectors, pins, sockets)

Optional Equipment

Air Inlet System

  • Low Profile Air Inlet Line, Shield (Air Inlet Line)

Charging System

  • Charging Alternators, Voltmeter Guages, Voltmeter Guage Mounting, Alternator Mounting Group

Cooling System

  • Sea Water Pump, Coolant Recovery Tank, Flange Kit

Exhaust System

  • Flexible Fitting, Elbow, Dry Elbow, Watercooled Elbow, Exhaust Connection, Exhaust Outlet Pipe, EXH Outlet Flange, Rain Cap, Muffler

Fuel System

  • Fuel Cooler, Fuel Connections, Primary Fuel Filter, Primary Fuel/Water Separator

Instrumentation

  • OEM Wiring Harness, Engine to Engine Harness, Digital Tachometer, Tachometer Mounting, Magnetic Pickup, RH 4 Hole Instrument Panel, LH 4 Hole Instrument, Marine Power Display System, Marine Power Display Unit (for additional monitoring stations), Marine Power Display Bracket, Wiring Group, Transmission Sensors

Lube System

  • Manual sump pump, Transmission oil cooler

Mounting System

  • Vibration Isolators

Power Take-Offs

  • Crankshaft Pulley, Front Stub Shaft, Front Stub Shaft & Pulley

Starting System

  • Air Pressure Regulator, Air Start Silencer, Start Switch, Jacket Water Heater, Battery sets (24 volt – dry)

General

  • Wiring Harness Removal, Belt Guard – Alternator, Belt Guard – Alternator Pulley, Filter Cover Kit

Packing

  • Overseas Preservation, Engine Protective Cover, Storage Preservation, Export Packing

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