Description

New Yanmar 6LT720 Marine Inboard Diesel Engine 720HP For Sale

The Yanmar 6LT720 Marine Inboard Diesel Engine 720HP is built for vessel owners who require maximum offshore performance, strong torque delivery, and dependable long-range cruising reliability. Commonly used in sport yachts, luxury tenders, high-performance center consoles, patrol boats, fast cruisers, and light commercial vessels, this engine delivers serious horsepower while maintaining a compact inboard footprint.

If you are researching the latest Yanmar 6LT720 price or looking for a Yanmar 6LT720 for sale, this engine remains a premium option for buyers seeking high-output propulsion systems for demanding marine applications.

At Yanmar Marine Experts, we supply premium yanmar diesel marine engine solutions for buyers looking for advanced electronic controls, lower emissions, and dependable offshore performance.

Built for planing and semi-planing hulls, this yanmar engines for sale option delivers strong acceleration, improved fuel efficiency, and smooth vessel handling for performance-focused operators.

Key Features of Yanmar 6LT720 Marine Diesel Engine

  • 720HP maximum output
  • High-performance common rail fuel system
  • Turbocharged and intercooled platform
  • Electronic engine management system
  • Strong acceleration for high-speed vessels
  • Compact installation footprint
  • Reduced vibration and quieter operation
  • Excellent fuel efficiency
  • Ideal for repower projects
  • Advanced digital vessel integration

This engine remains a strong option for buyers researching dependable marine engines yanmar for larger performance vessels.

Compatible Gearboxes & Propulsion Systems

The Yanmar 6LT720 Marine Inboard Diesel Engine 720HP 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 operational requirements before shipment.

Technical Specifications

Technical SpecificationValue
Engine ModelYanmar 6LT720
Engine TypeIn-line, 4-stroke vertical water-cooled diesel engine
Maximum Output720HP (530 kW)
Rated Speed2,300 RPM
Continuous Rating550HP (405 kW)
Number of Cylinders6 cylinders
Displacement11.7L
Bore x Stroke127 mm x 154 mm
Fuel SystemDirect Injection
AspirationTurbocharged & Charge Air Cooled
Engine ManagementElectronic
Starting SystemElectric Start 24V
Alternator24V – 65A
Cooling SystemFreshwater cooling with seawater pump
Dry WeightApprox. 1,150 kg
Drive TypeInboard Shaft Drive
Recommended ApplicationsSport yachts, patrol boats, fast cruisers
ComplianceEPA Tier 2, EU RCD, BSO II, EMC

Specifications based on available Yanmar technical documentation for the 720HP platform.

Standard Manufacturer Package Includes

All engines supplied by Yanmar Marine Experts are brand-new bobtail units and typically include electronic controls, LCD display, backup throttle control system, factory wiring components, owner manuals, installation documentation, and standard manufacturer accessories.

Optional upgrades may include additional control stations, custom transmission packages, and secondary alternator options depending on vessel requirements.

Compliance & Certifications

The Yanmar 6LT720 Marine Inboard Diesel Engine 720HP is built to meet applicable emissions and safety regulations for recreational and commercial applications.

Applicable certifications may include:

  • EPA Tier 2
  • EU RCD
  • BSO II
  • EMC

Engine Availability

We maintain access to available inventory through our internal stock and global dealer network. Availability may vary depending on production schedules and market demand. EPA marine emissions standards 

Warranty Coverage

All 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.  marine ownership resources

Global Shipping

We 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 Questions

Is the Yanmar 6LT720 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, this engine is commonly used for high-performance repower projects.

Do you ship internationally?

Yes, we coordinate worldwide delivery and export documentation.

How do I request pricing?

Contact our team for the latest Yanmar 6LT720 price and current availability.

Request a Quote

Contact 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 type
  • Current engine model (for repower projects)
  • Preferred gearbox model
  • Preferred gearbox ratio
  • Delivery location
  • Purchase timeline

Our 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.

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