Yanmar 6LY2A-UTP 370HP Inboard Diesel Marine Engine

Heavy planing cruisers and commercial utility pilot boats requiring simple mechanical reliability can turn to the Yanmar 6LY2A-UTP. This 5.813-liter inline 6-cylinder diesel engine delivers 370 horsepower at 3300 RPM through a high-pressure mechanical inline injection pump line. The mechanical direct injection setup offers straightforward servicing without complex electronics, making it a favorite for remote commercial operations.

Freshwater cooling via a closed heat exchanger isolates the engine block from raw seawater. The electrical matrix features a commercial-grade 24V 80-amp alternator, while the lightweight engine structure yields a dry mass of 530 kg (1168 lbs) without gear.

Engine Performance and Engineering

Robust mechanical engineering and high power-to-weight ratio define this Yanmar inboard engine. Forced oil lubrication keeps internal journals protected, while internal raw water loops service the freshwater heat exchanger efficiently.

Why Choose the Yanmar 6LY2A-UTP Inboard Marine Engine

Commercial captains choose the 6LY2A-UTP marine engine for its mechanical inline fuel pump reliability and light 530 kg dry weight. Delivering 370 horsepower from a 5.813-liter displacement block, it provides dependable power without computerized sensors. Closed heat exchanger cooling and a 24V 80-amp electrical system make it a practical workboat repower choice.

Warranty and Support

Yanmar covers this heavy-duty engine with a 2-Year Factory Warranty against manufacturing defects on major mechanical components. For engine details and order support, offers assistance before your repower order is placed. A pre-shipment visual inspection confirms the engine crate and documented included rigging items. Current coverage information and warranty eligibility are available for review on before ordering.

Before Ordering the Yanmar 6LY2A-UTP Inboard Marine Engine

Measure your engine room length and height to confirm fitting space for a 5.813-liter inline 6-cylinder block. Confirm your transmission ratio, shaft coupler bolt pattern, and 24V electrical system compatibility before finalizing your order.