Nanni marine diesel engine N5.200 with ZF Hurth reversing gear CR2INVZF85AR=2.50:1

The Nanni N5.200 CR2 is a 4-cylinder in-line marine diesel engine built on a 4.5-liter John Deere engine block. It produces an output of 149 kW (203 hp) at a rated speed of 2500 rpm and delivers a peak torque of 695 Nm at 2000 rpm. This power unit features replaceable wet-type cylinder liners, 4 valves per cylinder, internal balancers, and a common-rail fuel injection system. The air intake system is turbocharged and equipped with an air-to-seawater aftercooler. This complete propulsion package comes equipped with a heavy-duty hydraulic ZF Hurth ZF 85 A marine gearbox featuring an 8° down angle output and a high-torque 2.50:1 reduction ratio for optimized thrust and ultimate durability. The package includes a closed cooling system with a heat exchanger, a transmission oil cooler, and a 24V electrical system with a 50-Amp alternator. Holding an M3 duty rating for commercial operation up to 4000 annual hours with a load factor up to 50%, the engine complies with RCD 2013/53/EU, EPA Marine Tier 3, and IMO Annex VI emission standards.