C12

C12
Caterpillar
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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.
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.

Brochures and Spec Sheets

Gallery

C12

Specifications

Specification Value Unit
Power Range
Speed Range
Emissions
Aspiration
Bore 5.1 in
Stroke 5.9 in
Displacement 732.0 in³
Rotation from Flywheel End
Configuration
Width 38.1 in
Length 62.0 in
Dry Weight 2588.0 lb
Height 39.5 in

Standard Equipment

  • Air Inlet System
  • Control System
  • Cooling System
  • Exhaust System
  • Flywheels & Flywheel Housings
  • Fuel System
  • Instrumentation
  • Lube System
  • Mounting System
  • Power Take-Offs
  • Protection System
  • General

Optional Equipment

  • Air Inlet System
  • Charging System
  • Cooling System
  • Exhaust System
  • Fuel System
  • Instrumentation
  • Lube System
  • Mounting System
  • Power Take-Offs
  • Starting System
  • General
  • Packing