February 18, 2025

Engine: Mercury Diesel 4.2L 320hp

During the Dusseldorf 2025 boat show Mercury Marine proudly introduced the latest evolution of its Mercury Diesel 4.2L, compliant with RCD II emission standards, and now available in the European Union markets. The Mercury Diesel 4.2L (RCD II) is a six-cylinder, in-line engine with a 4.2-liter displacement, equipped with a turbocharger and aftercooler. Thanks to the Common Rail fuel system with electronically controlled injectors, the engine ensures precise tuning of the air-to-fuel ratio. This results in improved acceleration, higher top speeds, and greater efficiency. The new Mercury Diesel 4.2L fully complies with RCD II emission standards. This was achieved through modified fuel injectors and advanced electronic engine control systems. The engine is compatible with both conventional diesel fuel and HVO biofuel, enabling a reduction in particulate matter, nitrogen oxides, and carbon dioxide emissions. The Mercury Diesel 4.2L 320hp offers a maximum torque of 703 Nm at 2600 RPM and a fuel consumption of 71.9 litres per hour at full load. The Mercury Diesel 4.2L is fully compatible with Mercury Marine’s Next Gen DTS and JPS Precision Joystick system, and features a closed water-cooling system, increasing durability and reliability. Additionally, Mercury SeaCore® technology provides maximum protection against corrosion in saltwater environments. Maintenance is simplified with top-mounted fluid reservoirs, a self-draining oil filter, and an easily accessible oil level indicator.

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