Cat C12 Marine Engines

Versatile marine diesel power developed to deliver reliable performance across commercial vessels, cruising yachts, and professional marine operations.

One Platform. Endless Possibilities.

Few marine propulsion platforms demonstrate the adaptability of the Cat C12 Marine Engine. Developed to serve both commercial operators and recreational vessel owners, the C12 combines dependable horsepower with refined operating characteristics that suit a broad range of marine environments. Its electronically controlled fuel injection system continuously manages combustion for responsive acceleration, efficient fuel consumption, and smooth engine performance throughout varying operating conditions. Whether installed aboard sportfishing boats, motor yachts, passenger vessels, commercial fishing fleets, or utility craft, the Cat C12 provides a dependable balance of capability, efficiency, and durability that has earned the confidence of marine professionals around the world.

Explore the Cat C12 Series

* Cat C12 490
* Cat C12 540
* Cat C12 600
* Cat C12 670
* Cat C12 715

Confidence Built Through Proven Marine Engineering

Long term value is created through engineering that continues performing year after year in challenging marine environments. The Cat C12 is designed with durable core components, advanced electronic engine management, and an efficient combustion system that supports dependable operation while helping reduce fuel consumption and maintenance demands. This combination of operational flexibility, proven reliability, and broad application suitability has made the C12 one of Caterpillar’s most trusted marine propulsion platforms for operators who require consistent performance without compromise.