Yanmar 6LY2A-UTP 370HP Inboard Diesel Marine Engine

Description

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.

Key Specifications of the Yanmar 6LY2A-UTP Inboard Marine Engine

• The 5.813-liter 6-cylinder mechanical engine produces 370 horsepower at 3300 RPM, delivering steady propulsive thrust for utility hulls.
• Direct mechanical injection via a high-pressure inline pump line ensures dependable, simple operation without reliance on complex digital electronics.
• Turbocharged and intercooled air induction maximizes combustion efficiency, providing strong mid-range torque for pushing heavy planing craft.
• Freshwater heat exchanger cooling keeps raw seawater out of internal waterways, protecting metallurgy from premature salt corrosion.
• A heavy-duty 24V 80-amp alternator array supplies high-voltage electrical charging capacity to support commercial DC equipment setups.
• A trim dry weight of 530 kg offers an impressive power-to-weight ratio, keeping overall vessel displacement balanced after installation.

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.

Mounting and Compensation Considerations

Ensure engine mount spacing on stringers aligns with the propeller shaft coupling drop. Confirm raw water intake sea cock flow rates and verify that the exhaust mixing elbow maintains proper height above the waterline.

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, Mulmarine.com 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 Mulmarine.com 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.