New CAT Equipment

C12 Propulsion Engine

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.

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Product Specs

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 5.1 in
Stroke 5.9 in
Displacement 732 in³
Rotation from Flywheel End Counterclockwise
Configuration In-line 6, 4-Stroke-Cycle Diesel

Dimensions & Weights

Width 38.1 in
Length 62 in
Dry Weight 2588 lb
Height 39.5 in