Nanni Diesel N4.50 Marine Engine (36.8 kW / 50 hp) Powerful and highly dependable 4-cylinder in-line diesel engine built on a robust Kubota engine block. With a 2.2-liter displacement, this naturally aspirated engine delivers an impressive peak torque of 146 Nm at just 1800 rpm, ensuring smooth operation and superior thrust at low engine speeds. The engine features a mechanical indirect injection system, a closed cooling system with a heat exchanger, and a high-capacity 100A/120A alternator. It complies fully with strict environmental regulations, including RCD 2013/53/EU, EPA Marine Tier 3, and BSO 2. Equipped with a premium instrument panel (featuring a tachometer, coolant temperature, and oil pressure gauges), an electric stop function, and an integrated oil drain pump, it provides an outstanding, low-vibration propulsion solution for larger sailing yachts and heavy displacement cruisers.