Yanmar 6AYM-GTE Marine Diesel Engine (911 HP L-Rating) – Ultimate Power and Endurance by JB Marine GmbH
JB Marine GmbH, Germany’s leading supplier of Yanmar marine diesel engines, proudly presents the Yanmar 6AYM-GTE Marine Diesel Engine, a 6-cylinder powerhouse delivering 911 HP (670 kW) at 1938 RPM (L-Rating).
This advanced propulsion system combines reliability, power, and environmental compliance, making it the preferred choice for commercial vessels, offshore service boats, and industrial workboats operating under demanding marine conditions.
Engineered with Yanmar’s precision Japanese technology and backed by JB Marine GmbH’s certified support, the 6AYM-GTE offers the perfect balance of fuel efficiency, torque stability, and long-term durability.
Overview – Engineered for Demanding Marine Applications
The Yanmar 6AYM-GTE is built for professionals who require continuous, dependable power.
Featuring a direct injection system, turbocharger with intercooler, and heat exchanger cooling, it delivers high output with optimal fuel economy.
Its Exhaust Gas Recirculation (EGR) system ensures compliance with global IMO emissions regulations, enabling sustainable marine operations without compromising performance.
Whether you’re repowering an existing vessel or commissioning a new build, this engine is the trusted solution for endurance, efficiency, and environmental responsibility.
Key Features & Benefits
Exceptional Power Output
Delivering 911 HP at 1938 RPM, the Yanmar 6AYM-GTE’s 6-cylinder in-line engine ensures consistent high torque for continuous-duty commercial operations such as trawling, towing, and offshore transport.
Advanced Combustion Technology
Equipped with direct injection and 4-valve per cylinder technology, this engine maximizes airflow and combustion efficiency.
Micro-sized injector holes and optimized combustion chambers enable powerful, clean, and efficient operation.
IMO-Compliant Low-Emission Design
The integrated EGR (Exhaust Gas Recirculation) system minimizes NOx emissions.
The engine combines external EGR (with solenoid valves and coolers) and internal EGR (with variable valve timing) to maintain performance while meeting IMO global environmental standards.
Durability & Marine-Grade Construction
Built for heavy-duty environments, the heat exchanger cooling system, reinforced turbocharger, and high-strength components ensure outstanding reliability, even under prolonged high-load conditions.
Flexible Configuration for All Marine Needs
Available with or without marine gear, the 6AYM-GTE is ideal for both new vessel installations and repowering older crafts.
Its modular design provides installation versatility across a wide range of marine applications.
Technical Specifications – Yanmar 6AYM-GTE
| Specification | Details |
|---|---|
| Model | Yanmar 6AYM-GTE |
| Rated Output | 670 kW (911 HP) @ 1938 RPM (L-rating) |
| Number of Cylinders | 6 in-line |
| Displacement | 20.379 L |
| Combustion System | Direct Injection |
| Aspiration | Turbocharged + Intercooled |
| Cooling System | Heat Exchanger |
| Bore × Stroke | 155 mm × 180 mm |
| Starting System | Electric (24V / 7.0kW) |
| Dry Mass | 2365 kg |
| Certifications | IMO Emissions Regulations, NK / ABS / BV / RINA / CCS |
| Warranty | 5 Years Manufacturer Warranty |
Each engine is rigorously tested to Yanmar’s global quality standards and verified by JB Marine GmbH’s certified marine technicians.
Complete Engine Package – Ready for Installation
Every Yanmar 6AYM-GTE Marine Diesel Engine from JB Marine GmbH is supplied as a complete installation-ready system for professional operators.
Package Includes:
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Turbocharger + Intercooler Assembly
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Heat Exchanger Cooling System
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Fuel Pre-Filter with Water Separator
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Flexible Engine Mounts
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Exhaust Mixing Elbow
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Alternator (12V – 125A)
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Starter Motor (24V – 7.0kW)
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NMEA2000 Engine Monitoring System
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Freshwater Expansion Tank
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Belt Safety Cover
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Comprehensive Installation, Operation & Maintenance Manual
Available Gearbox Options:
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YX-181: 2.08 / 2.55 / 3.03 Ratios
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YX-180L: 3.50 / 4.00 / 4.54 Ratios
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YXH-240L: 4.89 / 5.36 / 5.91 / 6.57 / 6.95 Ratios
Each gearbox is Yanmar-approved for seamless integration, durability, and optimal torque conversion.
Optional Accessories & Upgrades
Enhance your engine system with optional factory-certified accessories:
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High-Riser Exhaust Mixing Elbow
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Secondary Alternators (12V – 125A / 24V – 60A)
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Front-Mounted Seawater Pump
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Hot Water Kits with Cocks
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Onboard Spare Parts Kit
All accessories are genuine Yanmar components, fully compatible and tested for long-term reliability.
Exhaust Gas Recirculation (EGR) Technology – Explained
The Yanmar 6AYM-GTE utilizes a dual EGR system to achieve outstanding emission control and efficiency.
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External EGR System: Incorporates solenoid valves, coolers, and electronic controls to recirculate exhaust gases with precision.
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Internal EGR System: Adjusts intake and exhaust valve lifts to lower combustion temperatures, reducing NOx emissions without compromising power output.
This system ensures compliance with IMO emission regulations while maintaining optimal combustion efficiency and reliability.
Warranty & Support from JB Marine GmbH
All Yanmar engines supplied by JB Marine GmbH come with full OEM support and extended protection.
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5-Year Manufacturer Warranty: Covers materials and workmanship defects.
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Extended Coverage Options: For continuous commercial use.
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Certified Installation & Maintenance: Performed by Yanmar-trained marine engineers.
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OEM Spare Parts Availability: Direct from JB Marine GmbH’s European distribution network.
Your investment is protected by Yanmar’s global warranty and JB Marine GmbH’s local service excellence.
Frequently Asked Questions (FAQs)
What vessels are ideal for the 6AYM-GTE engine?
Perfect for workboats, fishing trawlers, offshore vessels, and other commercial crafts needing continuous high-output power.
Does it meet international emissions standards?
Yes, fully compliant with IMO regulations through advanced EGR technology.
Can it be used for repowering projects?
Yes — compact, modular design makes installation simple for repowering older vessels.
How efficient is it?
With optimized combustion chambers and micro-size injectors, it achieves exceptional fuel economy even under high loads.
What’s covered under warranty?
All manufacturing defects are covered for five years, with optional extended plans available for commercial fleets.
Are parts easily available?
Yes — JB Marine GmbH stocks a complete range of Yanmar-approved spare parts and accessories.
Why Choose JB Marine GmbH – Authorized Yanmar Dealer in Germany
As a trusted Yanmar partner, JB Marine GmbH delivers more than just engines; we provide comprehensive propulsion solutions for the marine industry.
Our Advantages:
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Certified Yanmar dealer and service provider
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Factory-backed warranties and technical support
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Fast shipping across Germany and Europe
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Expert consultations for engine selection and installation
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Genuine spare parts and accessories are stocked locally
With decades of experience and a reputation for excellence, JB Marine GmbH is your partner for power, reliability, and performance at sea.
Contact JB Marine GmbH – Order Your Yanmar 6AYM-GTE Marine Diesel Engine
Empower your vessel with the unmatched performance of the Yanmar 6AYM-GTE Marine Diesel Engine (911 HP L-Rating).
Contact JB Marine GmbH for expert consultation, technical support, and competitive pricing today.
