YANMAR 6LY440 Marine Diesel Engine 440hp – The Ultimate Inboard Diesel Engine for Marine Performance
The YANMAR 6LY440 Marine Diesel Engine is a revolutionary high-performance inboard diesel engine, engineered to redefine efficiency, power, and reliability. This latest fourth-generation 6LY series builds on the legendary reputation of its predecessors, incorporating advanced mechanical and digital innovations to deliver unmatched marine propulsion. Designed for yacht owners, boat builders, and commercial operators, this engine provides exceptional fuel efficiency, low emissions, and smooth, quiet operation.
Unmatched Performance & Innovation
The beating heart of the YANMAR 6LY440 remains its compact 5.8L inline six-cylinder engine block, which has been a favorite in the marine industry for over three decades. However, this latest version introduces significant technological advancements:
- New High-Pressure Common Rail Fuel System: Replacing traditional injectors, the high-pressure common rail system delivers finely atomized fuel for improved power-to-weight ratio, fuel economy, and lower emissions.
- 24-Valve Cylinder Head with Redesigned Intake & Exhaust Manifold: This innovation optimizes engine breathing for enhanced efficiency and performance.
- Turbocharged & Intercooled: Ensures optimal power output while maintaining excellent fuel economy and durability.
- Compact & Versatile Fit: Maintains the same footprint as previous models, making it ideal for new builds and repowers.
- Cutting-Edge Digital Control System: Fully electronic, ensuring precision in fuel induction, aspiration, and monitoring.
Fingertip Controllability – YANMAR VC10 ‘Fly-by-Wire’ System
For the ultimate ease of use, YANMAR’s VC10 vessel control system provides:
- Precision gear shifting and throttle adjustment with perfect ‘feel’.
- Joystick control option for effortless docking.
- Integrated 3.5-inch IP66-rated display screens with UV-protection, anti-dazzle coating, and anti-fogging ventilation.
- Dual CAN bus networks for operational security, separating engine and monitoring functions.
- Easy integration with GPS, chart plotter, and monitoring systems through NMEA2000 data bus.
Technical Specifications
| Specification | Details |
|---|---|
| Rated Output | 324 kW / 440 mhp |
| Rated Speed | 3,300 rpm |
| Displacement | 5.813 L / 354 cu. in |
| Number of Cylinders | 6 in-line |
| Bore x Stroke | 106 mm x 110 mm |
| Aspiration | Turbocharged & Intercooled |
| Combustion System | Direct Injection, Common Rail |
| Alternator | 12V – 125A |
| Weight | 585 kg / 1,290 lbs |
| Certifications | RCD 2, IMO Tier 2, EPA Tier 3 |
Package Includes
- YANMAR 6LY440 Marine Diesel Engine
- Standard marine gearbox
- Exhaust mixing elbow
- Air heater
- Fuel/water separator
- High-riser mixing elbow
- User manual and installation guide
Optional Accessories
- YANMAR VC10 vessel control system
- Joystick control for precision maneuvering
- Custom exhaust systems
- Additional alternators for increased electrical output
- Engine monitoring and diagnostic systems
Warranty Information
YANMAR offers a comprehensive warranty covering materials and workmanship defects under normal use and maintenance. For complete warranty details, please refer to official YANMAR documentation or consult your authorized Seawave Marine GmbH dealer.
Frequently Asked Questions (FAQs)
1. What makes the YANMAR 6LY440 different from previous models?
The 6LY440 features a redesigned fuel system, a 24-valve cylinder head, and improved electronic controls, making it more efficient, fuel-saving, and environmentally friendly.
2. Is the YANMAR 6LY440 suitable for both new builds and repowers?
Yes, the compact footprint allows easy installation in new vessels and refits for boats previously using 6LY models or similar engines.
3. Can the 6LY440 be used for commercial applications?
Absolutely. The engine is ideal for yachts, workboats, patrol boats, and commercial marine applications, providing long-term reliability and fuel efficiency.
4. How is fuel consumption optimized?
With common-rail fuel injection and a redesigned intake and exhaust system, the 6LY440 provides excellent fuel economy, reducing operational costs.
5. Where can I buy the YANMAR 6LY440 Marine Diesel Engine?
You can purchase the YANMAR 6LY440 from Seawave Marine GmbH, an authorized YANMAR distributor. Contact us today for pricing, availability, and expert support!
Seawave Marine GmbH is your trusted partner for YANMAR diesel marine engines, offering expert guidance, competitive pricing, and top-tier customer support. Browse our selection of YANMAR Diesel Engines and find the perfect inboard diesel engine for sale today!
Contact us now to order your YANMAR 6LY440 Marine Diesel Engine and experience unparalleled marine power and efficiency!
