Yanmar 6LY3-ETP – Inboard Diesel Engine 480 HP

Yanmar 6LY3-ETP 480 HP – Maximum Performance Sportfish Diesel

Pushing the boundaries of the 5.8-liter block, the Yanmar 6LY3-ETP generates a class-leading 480 HP at 3300 RPM. This engine solves the demand for high-speed interceptor performance in American sportfishing boats and fast express cruisers. By optimizing the turbocharger mapping and common-rail timing, Yanmar has created a high-torque powerhouse that allows US captains to reach distant fishing grounds faster while maintaining the fuel efficiency needed for extended durations offshore.

Adhering to USA EPA Tier 3 standards, the 6LY3-ETP features a 24-valve head and electronic management for optimized combustion cycles at all throttle positions. For the American operator, this results in a responsive, low-noise engine that meets all modern environmental requirements without sacrificing the “hole shot” acceleration needed in heavy seas. Its robust cooling architecture is designed for high-stress operation, ensuring durability in the high-salinity and high-temperature environments of the American Gulf Coast.

Core Technical Specifications

• Maximum Output: 480 HP at 3300 RPM.
• Displacement: 354 cubic inches (5.813 Liters).
• Configuration: 6-cylinder in-line diesel engine.
• Aspiration: Turbocharged and liquid-cooled aftercooler.
• Dry Weight: Approximately 1411 lbs with gearbox.
• Alternator: 12V / 80A high-capacity output.
• Compliance: EPA Tier 3 and IMO NOx compliant.
• Control System: Full electronic vessel control (EVC).