Yanmar 6LT640 Marine Inboard Diesel Engine 640hp

DescriptionNew Yanmar 6LT640 Marine Inboard Diesel Engine 640HP For SaleThe Yanmar 6LT640 Marine Inboard Diesel Engine 640HP is the highest output model in Yanmar’s modern 6LT lineup, built for vessel owners who need maximum acceleration, strong offshore performance, and dependable long-range cruising reliability. Commonly used in sport yachts, luxury tenders, center consoles, performance cruisers, and semi-planing vessels, this engine delivers exceptional horsepower while maintaining a compact installation footprint.If you are researching the latest Yanmar 6LT640 price or looking for a Yanmar 6LT640 for sale, this model remains one of the most powerful high-performance engines in Yanmar’s modern propulsion lineup.At Yanmar Marine Experts, we supply premium yanmar diesel marine engines for buyers seeking advanced electronic controls, reduced emissions, and dependable offshore performance.Built on Yanmar’s advanced 6LT platform, this yanmar marine engines solution is ideal for vessels that require strong torque delivery, faster cruising speeds, and modern fuel efficiency.Key Features of Yanmar 6LT640 Marine Diesel Engine640HP maximum outputCommon rail direct fuel injectionTurbocharged and intercooled platformElectronic engine management systemStrong acceleration for high-performance vesselsCompact lightweight designReduced vibration and quieter operationExcellent fuel efficiencyIdeal for repower projectsAdvanced digital vessel integrationThis engine remains a strong option for buyers researching dependable marine engine yanmar solutions for modern performance vessels.Compatible Gearboxes & Propulsion SystemsThe Yanmar 6LT640 Marine Inboard Diesel Engine 640HP can be paired with compatible propulsion systems based on your vessel configuration and performance goals. Common options include Yanmar Gearboxes, Yanmar Powerboat Gears, and ZF Gearboxes for shaft drive applications.We help buyers select the proper reduction ratio, control package, and complete propulsion setup based on hull design and operating requirements.Technical SpecificationsTechnical SpecificationValueEngine ModelYanmar 6LT640Engine Series6LT SeriesMaximum Output640HP (471 kW)Rated Speed2,530 RPMEngine TypeIn-line, 4-stroke vertical water-cooled diesel engineNumber of Cylinders6 CylindersDisplacement8.710LBore x Stroke117 mm x 135 mmFuel SystemCommon Rail Direct InjectionAspirationTurbocharged & IntercooledControlsElectronicCooling SystemFreshwater CoolingStarting SystemElectric StartAlternator24VDry WeightApprox. 1,125 kgDrive TypeInboard Shaft DriveRecommended ApplicationsSport yachts, performance cruisers, luxury tendersComplianceEPA / IMO / RCD standardsFinal specifications may vary slightly depending on engine configuration and destination market requirements.Standard Manufacturer Package IncludesAll engines supplied by Yanmar Marine Experts are brand-new bobtail units and typically include electronic controls, factory wiring components, owner manuals, installation documentation, flexible mounts, and standard manufacturer accessories.Optional upgrades may include additional control stations and complete transmission packages.Compliance & CertificationsThe Yanmar 6LT640 Marine Inboard Diesel Engine 640HP is built to meet modern emissions and safety regulations for recreational and light commercial applications.Applicable certifications may include:EPA standardsIMO regulationsRCD complianceManufacturer production standardsEngine AvailabilityWe maintain access to available inventory through our internal stock and global dealer network. Availability may vary depending on production schedules and demand.Warranty CoverageAll new Yanmar engines supplied by Yanmar Marine Experts include a standard 2-year manufacturer warranty for eligible recreational and commercial applications.Qualified buyers may also be eligible for an additional 3 years extended warranty coverage, depending on engine model, usage classification, and compliance with manufacturer maintenance requirements.Our team also assists customers with warranty registration, pre-delivery inspection documentation, and technical support before shipment.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 order is confirmed, processing begins immediately while final delivery timelines depend on your destination and inventory availability.Frequently Asked QuestionsIs the Yanmar 6LT640 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 good for repower projects?Yes, its compact design makes it ideal for modern repower applications.Do you ship internationally?Yes, we coordinate worldwide delivery and export documentation.How do I request pricing?Contact our team for the latest Yanmar 6LT640 price and current availability.Request a QuoteContact Yanmar Marine Experts today to request pricing for your preferred Yanmar marine engine.To help us prepare the most accurate quotation and ensure the correct engine configuration before shipment, please provide your:Vessel typeCurrent engine model (for repower projects)Preferred gearbox modelPreferred gearbox ratioDelivery locationPurchase timelineOur team can assist with engine availability, compatible Yanmar Gearboxes, Yanmar Powerboat Gears, ZF Gearboxes, export documentation, global shipping coordination, pre-delivery inspection, and warranty registration support before delivery.