Yanmar 6LF550 Marine Diesel Engine

DescriptionNew Yanmar 6LF550 Marine Inboard Diesel Engine 550HP For SaleThe Yanmar 6LF550 Marine Inboard Diesel Engine 550HP is the highest output model in Yanmar’s advanced 6LF Series, built for boat owners who need maximum horsepower, compact installation, and modern electronic control systems. Commonly used in sport yachts, center consoles, luxury tenders, planing boats, semi-displacement vessels, and light commercial applications, this engine delivers impressive acceleration, efficient cruising performance, and lower operating costs.If you are searching for a Yanmar 6LF550 for sale, this model remains a strong choice for buyers seeking premium high-performance inboard propulsion.At Yanmar Marine Experts, we supply premium yanmar engine solutions for buyers looking for modern common rail technology, quieter operation, and reliable long-term marine performance.Built on Yanmar’s latest 6LF platform, this yanmar marine engines option offers one of the best power-to-weight ratios in its class, making it ideal for vessels that demand high horsepower without excessive engine weight.Key Features of Yanmar 6LF550 Marine Diesel Engine550HP maximum outputBosch common rail direct injection systemTurbocharged and intercooled platformElectronic engine managementYanmar VC20 vessel control systemStrong acceleration for planing vesselsCompact lightweight designReduced vibration and quieter operationExcellent fuel efficiencyIdeal for repower projectsThis model is also popular among buyers researching dependable yanmar boat engines for modern recreational and light-duty commercial vessels.Compatible Gearboxes & Propulsion SystemsThe Yanmar 6LF550 Marine Inboard Diesel Engine 550HP can be paired with compatible transmission systems based on your vessel configuration and performance goals. Common options include Yanmar Gearboxes, Yanmar Powerboat Gears, and ZF Gearboxes for shaft drive and performance inboard applications.We help buyers select the correct reduction ratio, control package, and complete propulsion setup based on hull design and operating requirements.Technical SpecificationsTechnical SpecificationValueEngine ModelYanmar 6LF550Engine Series6LF SeriesMaximum Output550HP (404 kW / 550 mhp)Rated Speed3000 RPMEngine TypeIn-line, 4-stroke vertical water-cooled dieselNumber of Cylinders6 cylindersDisplacement6.728LBore x Stroke104 mm x 132 mmFuel SystemBosch Common Rail Direct InjectionAspirationTurbocharged & IntercooledControlsElectronic / VC20 SystemCooling SystemFreshwater coolingAlternator12V-90A / 24V-70ADry WeightApprox. 780 kgDimensions1519 x 893 x 881 mmDrive TypeInboard Shaft DriveRecommended ApplicationsSport yachts, tenders, planing vesselsComplianceEPA Tier 3, IMO Tier 2, RCD 2, EMCThe 6LF550 is designed for planing and semi-planing vessels up to approximately 55 feet and offers direct integration with NMEA and J1939 CAN-bus systems. marine safety standardsStandard Manufacturer Package IncludesAll engines supplied by Yanmar Marine Experts are brand-new bobtail units and typically include the VC20 vessel control system, electronic control head, backup panel, factory wiring components, flexible mounts, installation manuals, owner documentation, and standard manufacturer accessories.Optional upgrades may include secondary alternators, additional helm stations, joystick controls, and advanced engine monitoring systems.Compliance & CertificationsThe Yanmar 6LF550 Marine Inboard Diesel Engine 550HP is built to meet modern emissions and safety regulations for recreational and light-duty commercial marine applications. IMO marine regulations Applicable certifications include:EPA Tier 3IMO Tier 2RCD 2EMCEngine AvailabilityWe maintain access to available inventory through our internal stock and global dealer network. Availability may vary depending on production demand and seasonal ordering cycles.Warranty CoverageAll new Yanmar engines include standard manufacturer warranty coverage. Our team also assists buyers with warranty registration, pre-delivery inspection, and technical documentation support.Global ShippingWe ship worldwide through our logistics network using secure export packaging and complete documentation support. Shipping can be arranged under EXW, CIF, or CFR terms depending on your preferred delivery structure. Once your purchase is completed, processing begins immediately while final delivery timelines depend on your destination and inventory availability.Frequently Asked QuestionsIs the Yanmar 6LF550 currently available?Available inventory can be confirmed through our sales team.Does it come with a gearbox?Compatible Yanmar Powerboat Gears and ZF Gearboxes are available depending on your vessel setup.Is this engine ideal for repower projects?Yes, its compact footprint makes it highly suitable for repower applications.Do you ship internationally?Yes, we coordinate worldwide shipping and export documentation.How do I request pricing?Contact our team for the latest Yanmar 6LF550 price and current availability.Request a QuoteContact Yanmar Marine Experts today to secure the Yanmar 6LF550 Marine Inboard Diesel Engine 550HP for your vessel. We provide gearbox matching, global shipping support, warranty assistance, and complete propulsion solutions.