Yanmar 6HA2M-WHT 278HP Marine Inboard Engine | JB Marine GmbH Germany

Dependable Power. Proven Efficiency. Built for Professional Marine Performance.
The Yanmar 6HA2M-WHT 278HP Marine Inboard Engine is a six-cylinder, 13.14-liter diesel powerhouse engineered to deliver the perfect balance of power, reliability, and fuel efficiency. Designed for demanding commercial marine applications, including fishing vessels, passenger ferries, and workboats, this engine offers outstanding performance at 1,880 RPM with exceptional durability under continuous operation.

At JB Marine GmbH, an authorized Yanmar dealer in Germany, we supply new Yanmar marine engines for sale at competitive prices, complete with factory warranties, expert technical support, and worldwide delivery.

Engineered for Professional Performance

The Yanmar 6HA2M-WHT is built with the marine professional in mind, combining high torque, consistent performance, and excellent operating economy. Its naturally aspirated, water-cooled diesel configuration ensures dependable propulsion in all working conditions.

Performance Highlights:

• 278 HP (204 kW) at 1,880 RPM

• 6-cylinder, 13.14-liter diesel engine for superior torque output

• Direct fuel injection for clean and efficient combustion

• Mechanical engine control for reliability in demanding environments

• Electric start system (24V, 6.0 kW) for easy ignition under all conditions

With Yanmar’s legendary reliability, this engine delivers smooth, consistent power, keeping your vessel operational when it matters most.

Built Tough for Commercial Applications

Every component of the 6HA2M-WHT is designed to handle the rigors of continuous marine duty. From its heavy-duty cast-iron construction to its flexible engine mounts, the design ensures vibration-free operation and long-term endurance.

Durability Features:

• High-strength cylinder block and head for extended engine life

• Corrosion-resistant materials for harsh saltwater environments

• Flexible engine mounts to reduce vibration and onboard noise

• Low operating stress for long service intervals

Whether operating in coastal waters or open seas, this Yanmar engine delivers robust performance and long-term dependability.

Fuel Efficiency & Operating Economy

Fuel economy is a cornerstone of the Yanmar 6HA2M-WHT design.
The direct injection diesel system precisely meters fuel delivery, maximizing energy output while reducing overall fuel burn.

Efficiency Benefits:

• Optimized combustion for lower consumption

• Extended range between refueling intervals

• Reduced CO₂ and NOx emissions

• Ideal for long-haul commercial use

The result? Lower operating costs and higher profitability for every voyage.

Advanced Cooling System for Maximum Reliability

Engine temperature stability is crucial in marine environments. The Yanmar 6HA2M-WHT features an efficient heat exchanger cooling system that maintains optimal temperatures during prolonged operations.

Cooling System Advantages:

• Consistent thermal balance under continuous load

• Prevents internal corrosion and overheating

• Ensures peak efficiency and component longevity

• Easy access for inspection and maintenance

This system ensures that your engine runs cool, clean, and efficient — even under heavy workloads.

Simple, Reliable Mechanical Engine Control

For commercial operators who value simplicity and dependability, the 6HA2M-WHT uses a fully mechanical engine control system.
This design eliminates complex electronics, ensuring reliable performance and easy troubleshooting — even in remote maritime regions.

Mechanical Control Benefits:

• No dependence on electronic systems

• Easy to service and repair

• Proven mechanical durability under continuous use

• Simplified operation for all skill levels

This makes the Yanmar 6HA2M-WHT a preferred choice for commercial fishing fleets, ferries, and offshore support vessels.

Easy Maintenance & Long Service Life

The Yanmar 6HA2M-WHT is built for easy access and low-cost maintenance.
With clearly marked service points and optional oil evacuation systems, upkeep is quick and efficient, minimizing downtime and keeping your operations running smoothly.

Maintenance Highlights:

• Convenient access to oil, filters, and coolant points

• Routine service intervals every 250–500 hours

• Compatible with genuine Yanmar lubricants and filters

• Optional lube oil evacuation pump for faster oil changes

At JB Marine GmbH, our certified technicians ensure your engine remains in peak condition for years of dependable service.

Technical Specifications – Yanmar 6HA2M-WHT

Package Includes

Each Yanmar 6HA2M-WHT purchase from JB Marine GmbH includes:

• Yanmar 6HA2M-WHT Marine Inboard Diesel Engine

• Factory-installed heat exchanger cooling system

• Basic tool kit & spare parts package

• Operator’s manual & installation guide

• Warranty registration documentation

• Electric starting motor (24V, 6.0 kW)

• SAE #1 flywheel housing with 14-inch flywheel

• Kanzaki YX-120 marine gearbox (optional ratios available)

This package ensures you receive a complete propulsion solution, ready for installation and immediate deployment.

Optional Accessories

Enhance your Yanmar setup with optional marine-grade accessories, available through JB Marine GmbH:

• High-Riser Mixing Elbow – for improved exhaust dispersion

• Flexible Mount Kits – reduces onboard vibration

• Extension Wire Harness – available in 3m, 5m, 10m, and 20m lengths

• Water Separator & Fuel Filter – for cleaner fuel delivery

• Remote Control Panel – enables convenient engine monitoring

• Trolling Valve (KMH50A Transmission) – ideal for precision fishing applications

• Lube Oil Evacuation Pump – for effortless oil changes

All accessories are OEM-quality Yanmar components, ensuring seamless integration and peak performance.

Warranty Information

All Yanmar marine engines purchased through JB Marine GmbH are covered by a standard manufacturer’s warranty with global service support.

Warranty Coverage:

• 2 Years or 2,000 Operating Hours (whichever comes first)

• Covers parts and labor for manufacturing defects

• Extended warranty options available upon request

• Supported by Yanmar’s worldwide service network

With authorized service centers in Europe, Asia, and North America, your investment is protected wherever you operate.

Frequently Asked Questions (FAQs)

What vessels are ideal for the Yanmar 6HA2M-WHT?

Perfect for commercial fishing vessels, passenger ferries, and workboats, thanks to its durability and mechanical simplicity.

How does the engine achieve fuel efficiency?

Its direct injection diesel system ensures precise combustion, maximizing energy output while minimizing fuel burn.

Does it meet environmental standards?

Yes — the engine complies with IMO Tier II emissions regulations for eco-friendly marine operation.

How often should maintenance be performed?

Routine servicing every 250–500 hours, depending on operational intensity, ensures optimal performance and longevity.

Where can I purchase spare parts?

JB Marine GmbH provides genuine Yanmar parts and accessories with worldwide shipping.

Why Choose JB Marine GmbH?

• Authorized Yanmar Dealer in Germany

• Competitive Pricing & Volume Discounts

• Expert Marine Engine Consultation

• Fast, Secure Worldwide Shipping

• Professional Installation & After-Sales Service

At JB Marine GmbH, we combine engineering expertise, certified support, and genuine OEM supply to deliver high-value marine propulsion solutions worldwide.

Power Your Vessel with the Yanmar 6HA2M-WHT 278HP Marine Engine

Choose reliability, efficiency, and performance.
The Yanmar 6HA2M-WHT Marine Inboard Diesel Engine is your trusted partner for commercial marine operations — offering robust power and long-term economy.