Cat C12.9 High Performance Propulsion Engine

The C12.9 marine propulsion engine is ideal for high performance marine applications including yachts, fishing vessels, military vessels, governmental vessels and various other commercial high performance marine applications. The C12.9 is designed to be integrated with both the Cat Three60 Precision Control shaft line maneuvering and engine control solution as well as other marine industry throttle controls. The electronically-controlled C12.9 is offered in two power ratings: 850 mhp at 2300 rpm and 1000 mhp at 2300 rpm. Both ratings meet EPA Tier 3, IMO II, EU Recreational Craft Directive and EU Stage IIIA regulations. In addition to high power density, the C12.9 offers high torque at low engine speeds and fast acceleration throughout the entire engine speed range due to its air system design of integrated series turbochargers and a supercharger.

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Power Range
850-1000 mhp, 838-985 bhp, 625-735 bkW
Speed Range
2300 rpm
Emissions
EPA Tier 3, IMO II, EU Stage IIIA
Aspiration
TA

Product Specs

Ratings

Power Range
850-1000 mhp, 838-985 bhp, 625-735 bkW
Power Range
850-1000 mhp, 838-985 bhp, 625-735 bkW

Engine

Speed Range
2300 rpm
Emissions
EPA Tier 3, IMO II, EU Stage IIIA
Aspiration
TA
Bore
5.31in
Stroke
5.9in
Displacement
787in3
Rotation (from flywheel end)
Counterclockwise
Configuration
In-line 6, 4-Stroke-Cycle Diesel
Emissions
EPA Tier 3, IMO II, EU Stage IIIA
Bore
5.31in
Stroke
5.9in
Displacement
787in³

Dimensions & Weights

Length of Engine
57.6in
Height of Engine
42.7in
Width of Engine
43.7in
Length - Engine
57.6in
Width - Engine
43.7in

Standard/Optional Features

Standard Equipment:

  • Electronically controlled supercharger
  • Series turbochargers with heat shield
  • Watercooled exhaust manifold
  • Dual aftercoolers
  • Closed crankcase ventilation system
  • Thermostats and housing
  • Gear-driven sea water pump with bronze impeller
  • Common rail fuel system
  • Plate-type heat exchanger
  • Engine oil cooler
  • Engine-mounted fuel cooler
  • Vibration damper and guard
  • Grid heater
  • Electric fuel priming pump
  • Seawater pump outlet pressure sensor
  • Water-in-fuel detection switch
  • Exhaust gas stack temperature sensor
  • Coolant level sensor

Optional Equipment:

  • Alternators
    • 24V 120 amp
    • 24V 160 amp
    • 12V 200 amp
  • Transmission gear oil cooler
  • Transmission sensor packages for on- or-off-vessel monitoring
  • Instrument panel – MECP I
  • Electric Starting Motor
    • 12V
    • 24V