New Yanmar 6LY400 400HP Inboard Diesel Engine – Sale !!

inboard engine – The latest 6LY engine model builds upon the solid foundation established by its predecessors, incorporating significant advancements in engineering. At its core, it retains the renowned 5.8-liter inline six-cylinder YANMAR engine block, a trusted choice for powerboat racing with a legacy spanning over thirty years. This engine is celebrated by boat designers, builders, and owners for its exceptional performance, fuel efficiency, reliability, and quiet, smooth operation.

This new version ushers the engine into a new era of advanced mechanical and digital technology. The fuel induction and aspiration systems have been entirely re-engineered, now leveraging cutting-edge electronic precision to enhance overall performance. The previous single injectors have been replaced with a high-pressure common-rail fuel system, which provides finely atomized fuel to the cylinders, improving power-to-weight ratio, fuel economy, and operational smoothness.

OUTSTANDINGLY CLEAN AND POWERFUL PERFORMANCE

Building on three decades of engineering excellence, the fourth-generation 6LY engine offers a robust and smooth operation. Featuring an advanced Denso common rail fuel injection system, this engine delivers superior fuel efficiency and reduced noise compared to earlier models. Its high torque across the operating range ensures exceptional acceleration and responsive performance.

The engine’s compact and lightweight design allows for easy installation in constrained engine compartments, making it an ideal choice for both retrofitting existing vessels and equipping new ones.

DETAILS

• Available in two output variants: 400 and 440 mhp
• Suitable for jet and shaft drives
• Electronically controlled via YANMAR VC10 Vessel Control System, accommodating up to 4 control stations
• Optional JC20 joystick control available for twin shaft drive systems
• Approved for recreational and light-duty commercial use
• SOLAS option and USCG lifeboat certification available

Specifications

• Rated Output: 294 kW / 400 mhp
• Rated Speed: 3300 rpm
• Displacement: 5.813 L / 354 cu. in
• Number of Cylinders: 6
• Cylinder Bore x Stroke: 106 mm x 110 mm / 4.17 in x 4.33 in
• Combustion System: Direct Injection, Denso Common Rail System
• Aspiration: Turbocharged & Intercooled
• Alternator: 12V – 125A
• Dry Weight (without gear): 585 kg / 1290 lbs
• Dimensions: 1440 mm x 748.5 mm x 773.8 mm
• Controls: Electronic
• Certifications: RCD 2, IMO Tier 2, EPA Tier 3, EPA Tier 3C, BSO II, EMC, SOLAS

NOTE:

• 1 kW = 1.3596 mhp = 1.34102 bhp
• Fuel condition: density at 15°C = 0.842 g/cm³
• Technical data based on ISO 8665 / ISO 3046
• Fuel temperature at 40°C at the fuel injection pump inlet (ISO 8665)
• Length measured with KMH61A-2 gearbox & high-riser elbow (dimensions may vary with other gearboxes/elbows)

Standard Engine Package

• Exhaust mixing elbow [L-type]
• Alternator 12V – 120A
• VC10 Vessel Control System
• Fresh water expansion tank

Optional Accessories

• High-riser mixing elbow (alternative to L-elbow)
• Flexible mounts (Barry or Bridgestone)
• Secondary alternator (12V – 120A or 24V – 45A)
• Extension harness (3m, 5m, 10m)
• Second control station
• JC20 Inboard Joystick
• NMEA2000 Engine Monitoring System
• SOLAS certification (factory fit only)
• Hot water kit
• Water separator
• Lube oil drain pump
• Bilge pump (12V)