Yanmar 6HA2M-WHT 350HP Marine Inboard Engine
The Yanmar 6HA2M-WHT 350HP Marine Inboard Engine is a heavy-duty six-cylinder marine diesel engine developed for commercial fishing vessels, workboats, passenger boats, and compatible marine repowering projects.
Producing 350 metric HP (257 kW) at 1,950 RPM under its M-rating, the Yanmar 6HA2M-WHT features a 13.14-litre displacement, turbocharged and intercooled induction, mechanical direct fuel injection, and freshwater cooling.
Designed for conventional inboard shaft-drive propulsion, this engine provides substantial torque, reliable diesel performance, and robust construction for demanding marine operating conditions.
Why Choose the Yanmar 6HA2M-WHT?
Powerful 350 HP Marine Diesel Performance
The engine delivers 350 metric HP from a large-displacement six-cylinder platform, providing the power required for appropriately matched commercial vessels and marine propulsion applications.
Turbocharged and Intercooled Technology
The turbocharger increases intake-air delivery, while intercooling helps control intake-air temperature, supporting efficient combustion and dependable engine performance.
Reliable Mechanical Fuel Injection
The mechanical direct-injection system provides straightforward diesel operation without the complexity of modern electronic common-rail fuel systems.
Durable Commercial Marine Construction
Built around a robust 13.14-litre diesel engine, the Yanmar 6HA2M-WHT offers conventional mechanical engineering, practical servicing, and compatibility with heavy-duty marine transmissions.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Yanmar |
| Engine Model | 6HA2M-WHT |
| Engine Type | Four-stroke marine diesel |
| Configuration | Inline six-cylinder |
| Displacement | 13.14 litres |
| Rated Power — M-Rating | 350 metric HP / 257 kW |
| Rated Speed — M-Rating | 1,950 RPM |
| Alternative H-Rating | 278 metric HP / approximately 204 kW |
| Rated Speed — H-Rating | 1,880 RPM |
| Fuel Injection | Mechanical direct injection |
| Aspiration | Turbocharged and intercooled |
| Engine Controls | Mechanical |
| Cooling System | Freshwater cooling with heat exchanger |
| Starting System | 24V electric |
| Lubrication | Pressure-fed lubrication |
| Compatible Gearboxes | Yanmar YX-120 / YX-120L |
| Propulsion | Conventional inboard shaft drive |
| Applications | Fishing vessels, workboats, passenger vessels and repowering |
Specifications represent the Yanmar 6HA2M-WHT engine family. Exact equipment, dimensions, dry weight, gearbox ratios, and electrical components should be verified against the manufacturer’s documentation and the individual engine identification plate.
Compatible Marine Gearboxes and Control Systems
The Yanmar 6HA2M-WHT 350HP can be configured with compatible heavy-duty marine transmissions for conventional shaft-drive propulsion.
| Marine Gearbox | Configuration |
|---|---|
| Yanmar YX-120 | Hydraulic marine reverse gearbox |
| Yanmar YX-120L | Hydraulic marine reverse gearbox |
The correct gearbox and reduction ratio depend on the vessel’s displacement, propeller size, shaft arrangement, and intended operating profile.
Compatible Control Equipment
Depending on the selected package, compatible equipment may include:
- Mechanical throttle and gearshift controls
- Yanmar engine instrument panel
- Engine temperature and oil-pressure monitoring
- Engine warning alarms
- Compatible wiring harnesses
- Flexible engine mounts
- Marine shaft coupling and installation accessories
Gearbox selection, control compatibility, and shaft alignment must be confirmed before installation.
Applications and Duty Ratings
The Yanmar 6HA2M-WHT is suitable for appropriately matched marine applications, including:
- Commercial fishing vessels
- Marine workboats
- Passenger and utility boats
- Displacement motor vessels
- Compatible marine repowering projects
Published Engine Power Ratings
| Duty Rating | Maximum Output | Rated Speed |
|---|---|---|
| M-Rating | 350 metric HP / 257 kW | 1,950 RPM |
| H-Rating | 278 metric HP / approximately 204 kW | 1,880 RPM |
The 350 HP M-rating and 278 HP H-rating represent different published operating ratings. The correct rating must be selected according to the manufacturer’s application guidance, vessel loading, expected operating hours, and operating conditions.
The maximum 350 HP rating should not automatically be treated as unrestricted continuous-duty power.
Price, Package Contents and Warranty
Price: Contact JB Marine GmbH for a quotation.
Depending on the selected configuration, the package may include:
- Yanmar 6HA2M-WHT marine diesel engine
- Turbocharger and intercooling components
- Freshwater cooling system
- Electric starter motor
- Compatible Yanmar marine gearbox
- Engine instrument panel
- Flexible engine mounts
- Selected wiring and installation accessories
The marine gearbox, alternator, exhaust components, shaft coupling, and additional installation accessories must be specifically confirmed in the quotation.
Warranty: Applicable manufacturer or seller warranty coverage depends on the engine’s condition, production year, market, and supply arrangement. Full warranty terms will be confirmed before purchase.
Frequently Asked Questions
How Much Power Does the Yanmar 6HA2M-WHT Produce?
The engine delivers 350 metric HP (257 kW) at 1,950 RPM under its M-rating.
What Is the Displacement of the Yanmar 6HA2M-WHT?
The engine has a displacement of 13.14 litres.
Is the Yanmar 6HA2M-WHT Turbocharged?
Yes. It features turbocharging and intercooling to support higher engine output and efficient combustion.
Which Marine Gearboxes Are Compatible?
Documented transmission options include the Yanmar YX-120 and YX-120L, subject to configuration and installation verification.
What Is the Difference Between the M-Rating and H-Rating?
The M-rating provides a published output of 350 metric HP at 1,950 RPM, while the H-rating provides 278 metric HP at 1,880 RPM. Their permitted operating conditions should be checked against Yanmar’s duty-rating guidance.
Is the Yanmar 6HA2M-WHT Suitable for Repowering?
Yes. The engine may be suitable for compatible repowering projects, provided its dimensions, mounting arrangement, transmission, propeller, shafting, cooling, and exhaust requirements are correctly matched.
Buy the Yanmar 6HA2M-WHT 350HP from JB Marine GmbH
Looking for a Yanmar 6HA2M-WHT 350HP marine inboard engine for sale?
JB Marine GmbH provides quotations for Yanmar marine diesel engines, compatible marine gearboxes, propulsion accessories, and international shipping.
Contact our sales team with your vessel specifications, preferred gearbox configuration, required quantity, and delivery destination.
Request your Yanmar 6HA2M-WHT 350HP quotation today.
Website: https://jbmarinegmbh.de/
