CAT C12 Marine Diesel

340–490 BHP Propulsion Power

Power Range: 340 – 490 BHP (254 – 366 bkW) | Rated Speed: 1,800 – 2,300 RPM | Emissions: IMO II compliant (490 BHP @ 2,300 RPM meets IMO I)

The Caterpillar C12 marine propulsion engine pairs an electronically controlled unit-injection fuel system with a compact 12-liter block, delivering clean combustion, class-leading fuel economy, and rock-solid torque for commercial fishing vessels, workboats, and pleasure craft alike.

Key Advantages

• High-Efficiency Fuel Mapping – ECU optimizes injection timing for maximum power with minimal fuel burn.
• Clean Exhaust Profile – Designed to meet stringent IMO II standards, reducing NOx and particulate output.
• Proven Durability – Cat engineering and robust internals ensure long overhaul intervals in harsh saltwater environments.

In Stock & Ready to Ship

Boots & Hanks Truck Parts carries complete Cat C12 take-outs, reman long blocks, turbos, injectors, ECMs, and full overhaul kits—all dyno-tested, warrantied, and available for same-day global shipping.

Power your vessel with trusted Caterpillar reliability—call 800-738-7802 or browse live inventory at BootsAndHanksTruckParts.com today.