Yanmar 6LY3-ETP Marine Inboard Diesel Engine 480hp
$50,288.00
- Description
Description
Yanmar 6LY3-ETP Marine Inboard Diesel Engine 480HP
The Yanmar 6LY3-ETP 480HP marine inboard diesel engine delivers 480 metric horsepower (353 kW) at 3,300 rpm from a 5.813-litre, six-cylinder platform. With a 24-valve cylinder head, turbocharging, intercooling and electronically controlled direct injection, it offers high-output diesel propulsion for recreational vessels. YANMAR Marine International
For a yacht installation or performance-focused repower, the right package starts with the engine, transmission and controls working together. Enquire with MSS Motorsports UG about Yanmar 6LY3-ETP pricing, available configurations and delivery options for your project.
High Output from a 5.813-Litre Platform
The 6LY3-ETP combines an inline-six layout with electronic injection management and heat-exchanger cooling. Owners considering it for a motor cruiser or recreational sportfishing boat should assess the vessel’s power requirement, weight and drivetrain alongside the engine’s output.
Key features include:
- 480 MHP maximum output: Published at the crankshaft at 3,300 rpm.
- 24-valve configuration: Four-stroke, six-cylinder marine diesel construction.
- Turbocharger and intercooler: A forced-induction arrangement supporting the engine’s rated performance.
- Electronic injection control: Manufacturer-specified management of direct fuel injection.
- Helm control options: Yanmar lists Classic hybrid and Unlimited electronic systems.
- 640 kg published dry weight: Engine only, excluding the marine gearbox. YANMAR Marine International
Technical Specifications
| Specification | Manufacturer-Published Details |
|---|---|
| Engine model | Yanmar 6LY3-ETP |
| Maximum crankshaft output | 353 kW / 480 MHP at 3,300 rpm |
| Published continuous crankshaft rating | 321 kW / 436 MHP at 3,198 rpm |
| Displacement | 5.813 litres |
| Cylinder arrangement | Six cylinders in line |
| Engine cycle | Four-stroke diesel |
| Valve configuration | 24 valves |
| Bore × stroke | Approximately 106 × 110 mm |
| Fuel system | Electronically controlled direct injection |
| Aspiration | Turbocharged and intercooled |
| Cooling | Liquid cooling with heat exchanger |
| Dry weight without gearbox | 640 kg |
| Intended use | Recreational craft |
Specifications follow Yanmar’s published product data and operation manual. YANMAR Marine International
The 480HP designation refers to metric horsepower (MHP). It represents maximum crankshaft output; power reaching the propeller is affected by drivetrain losses.
Maximum Power and Recreational Operating Duty
The 480 MHP maximum rating and 436 MHP continuous rating describe different operating points. Yanmar’s operation manual identifies the 6LY3-ETP for recreational use and specifies maximum-throttle operation for less than 5% of total engine time—approximately 30 minutes in every 10 hours. yanmar.com
The published continuous rating should be read within those recreational operating instructions. Commercial use requires separate confirmation of the applicable rating, certification and installation approval.
For a lower-output model within the same family, compare the Yanmar 6LY3-UTP 380HP marine diesel engine. Select the output that suits the vessel’s propulsion demand and operating profile.
Marine Gearbox and Control Integration
Yanmar’s 6LY3-ETP documentation includes KMH61A and KMH61V marine gear configurations, both using hydraulically operated multi-disc clutches. The selected transmission, reduction ratio and shaft arrangement must suit the proposed installation. yanmar.com
Confirm the helm control system, instrument display, wiring harnesses and number of control stations included in your quotation. Electrical equipment and accessories can vary between engine versions and supply packages.
Review the official Yanmar 6LY3-ETP specifications and technical documents when planning your installation.
Plan Your Marine Engine Repower
A successful Yanmar 6LY3-ETP 480HP repower requires more than matching horsepower. Your installer should review engine-bed dimensions, gearbox alignment, propeller loading, exhaust height, cooling-water supply and access for routine maintenance.
Provide photographs of the existing engine plate and gearbox plate with your enquiry. These details help establish the current installation and identify the information needed to assess a replacement package.
Confirm Condition, Package Contents and Warranty
Before comparing engine prices, request a written supply specification covering:
- Exact model, serial number, condition and operating hours where applicable.
- Available service history, rebuild documentation and inspection or running-test evidence.
- Gearbox model and ratio, controls, instruments, mounts and included accessories.
- Warranty provider, coverage, exclusions and commissioning requirements.
- Availability, dispatch estimate, packing and transport charges.
Manufacturer specifications describe the engine platform. The quotation should confirm the condition and contents of the particular engine being offered.
Frequently Asked Questions
Is the Yanmar 6LY3-ETP 480HP rated at 480HP continuously?
No. Yanmar lists 480 MHP as maximum output and 436 MHP as the continuous crankshaft rating. Recreational operating limits still apply. yanmar.com
Can I retain my existing gearbox?
Compatibility must be checked against input power and speed, reduction ratio, connection, shaft geometry and control requirements.
Does the engine include a manufacturer warranty?
Warranty eligibility depends on the engine and supply arrangement. Request written confirmation of the provider, coverage and applicable conditions.
Request Your Yanmar 6LY3-ETP 480HP Quote
Contact MSS Motorsports UG for a Yanmar 6LY3-ETP quotation with your vessel make and model, existing engine, gearbox model and ratio, intended operating profile and purchase timing. Include your billing and delivery addresses to request pricing for the specified engine package and transport to your destination.
