The Wartsila 31DF is a state-of-the-art, four-stroke, medium-speed dual-fuel engine engineered for superior fuel efficiency, operational flexibility, and low emissions. Recognized by Guinness World Records as the world’s most efficient 4-stroke engine in its class, it operates on natural gas (LNG), marine diesel oil (MDO), and heavy fuel oil (HFO). Available in 8V, 10V, 12V, and 16V configurations, it produces power ranging from 4,600 to 11,000 kW at 720 or 750 rpm. The Wartsila 31DF complies with IMO Tier III emission standards in gas mode without SCR, making it ideal for future-proof, sustainable marine operations across ferries, cruise ships, and offshore vessels.

ENGINE SPECIFICATIONS

POWER   MAXIMUM TORQUE   Certification  

11,000KW   146,000Nm@750 RPM  IMO Tier III (with gas)                                 

NEW GENUINE / REMAN