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Cat C12.9 High Performance Propulsion Engine

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Product Description

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.

Power Range
850-1000 mhp, 838-985 bhp, 625-735 bkW
Speed Range
2300 rpm
In-line 6, 4-Stroke-Cycle Diesel
5.31 in
135.0 mm
5.9 in
150 mm
787 in3
12.9 L
Rotation (from flywheel end)
EPA Tier 3, IMO II, EU Stage IIIA
Dimensions & Weights
Length of Engine
57.6 in
1463 mm
Width of Engine
43.7 in
1110 mm
Height of Engine
42.7 in
1085 mm

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

Transmission gear oil cooler
Transmission sensor packages for on- or-off-vessel monitoring
Instrument panel – MECP I
Electric starting motor

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