Yanmar Marine Engine Parts & Diesel Spares
Alfa Marine Spare Parts supplies Yanmar marine engine parts and diesel spares for recreational boats, yachts, commercial vessels and workboats. We source genuine, OEM and replacement components for a wide range of current and legacy Yanmar marine diesel engines.
Whether you need routine maintenance parts, fuel-system components, cooling parts or major engine components for an overhaul, accurate engine identification is important. When requesting Yanmar spare parts, provide the engine model, serial number and existing part number whenever available.
Need help finding a specific component? Request a Quote and send us your engine and part details.
Yanmar Marine Diesel Engine Parts
Yanmar has developed marine diesel engines for applications ranging from compact sailboats and recreational craft to high-speed vessels, commercial boats and workboats.
Its marine engine portfolio includes well-known families such as the GM, YM, JH, LY, LP, LHA, BY, CX, SY, AY and EY Series.
Because these engine families include different generations and configurations, ordering a part based only on a general description such as “Yanmar 6LY” or “Yanmar JH” may not be enough.
For accurate parts identification, we recommend supplying:
Engine model + serial number + existing part number
This is particularly important for fuel-system components, water pumps, turbochargers, electronic controls, sensors and internal engine parts.
Supported Yanmar Marine Engine Models & Series
We stock and source Yanmar engine parts across a broad range of recreational and commercial marine applications.
Yanmar JH Series Parts
The Yanmar JH family includes compact marine diesel engines used extensively in sailboat and yacht propulsion.
We can source parts for JH models including:
- 3JH3E
- 3JH4E
- 3JH5E
- 4JH3E
- 4JH4E
- 4JH5E
- 4JH4-TE
- 4JH4-HTE
- 4JH80
- 4JH110
Available components can include filters, impellers, water pumps, fuel-system parts, gaskets, belts, sensors, engine mounts and internal engine components.
Always identify the complete JH engine model and serial number before ordering.
Yanmar GM & YM Series Parts
For compact sailboat and recreational marine engines, we supply and source parts for models including:
- 1GM10
- 2GM20
- 3GM30
- 2YM15
- 3YM20
- 3YM30
These engines remain important in the marine spare-parts market, particularly for maintenance and repair of existing installations.
We can source service components and replacement parts including filters, impellers, belts, gaskets, water-pump components, fuel-system parts and other engine spares.
Yanmar LY & 6LY Engine Parts
Yanmar LY engines are widely used in high-speed recreational and commercial marine applications.
Supported models include:
- 4LY-STC
- 4LY2-ST
- 6LY-STE
- 6LY2A-STP
- 6LY3-ETP
- 6LY400
- 6LY440
Different generations of the LY and 6LY families can use different fuel systems, turbochargers, cooling components, electronics and internal engine parts.
For this reason, a component advertised simply as a Yanmar 6LY part should not automatically be assumed to fit every 6LY engine.
Always verify the complete engine designation and serial number.
Yanmar LHA, LP & BY Engine Parts
We can also source parts for Yanmar high-speed and legacy marine engines including:
- 4LHA-STE
- 6LPA-STP
- 6LPA-STZP
- 4BY2
- 6BY2
These are separate Yanmar engine families and can require different components even when the engines are installed in similar types of vessels.
When ordering, provide the complete model designation rather than simply requesting a “Yanmar LPA” or “Yanmar BY” part.
Yanmar CX & SY Series Parts
For larger high-speed marine applications, we can source components for Yanmar engines including:
- 6CX530
- 6SY-STP
- 8SY-STP
Available parts can include fuel-system components, cooling-system parts, turbocharger components, filters, pumps, gaskets, seals, sensors and internal engine components.
Compatibility should always be verified against the individual engine.
Yanmar Commercial & Workboat Engine Parts
Alfa Marine Spare Parts also sources components for larger Yanmar commercial marine engines.
Supported engine families and models include:
- 6AYM-WST
- 6AYM-WET
- 6EY17W
- 6EY22AW
- 6EY26W
- YEBISU marine engines
Yanmar commercial engines are used in demanding marine environments where correct component identification is especially important.
Configurations can differ according to engine model, production version, propulsion or auxiliary application and vessel specification.
For commercial Yanmar parts enquiries, provide:
Engine model + complete serial number + existing part number + required quantity
Request a Quote for Yanmar Marine Engine Parts
Yanmar Marine Spare Parts
We supply and source a broad selection of Yanmar marine diesel engine spares for scheduled maintenance, repairs and engine overhaul work.
Available parts can include:
- Fuel injectors and injection components
- Fuel injection pumps
- Fuel filters
- Oil filters
- Air filters
- Sea water pumps
- Fresh water pumps
- Water pump repair kits
- Impellers
- Heat exchangers
- Oil coolers
- Turbochargers and related components
- Cylinder heads
- Cylinder head gaskets
- Pistons and piston rings
- Cylinder liners
- Connecting rods
- Main and connecting-rod bearings
- Crankshaft components
- Camshaft components
- Valves and valve-train parts
- Gaskets and seals
- O-rings
- Sensors and switches
- Alternators
- Starter motors
- Belts
- Engine mounts
- Electronic controls
- Marine transmission components
- Maintenance kits
- Overhaul components
Availability and compatibility depend on the individual Yanmar engine and part number.
Yanmar Fuel System Parts
The fuel system is one of the most important areas where exact engine identification is required.
We can source Yanmar fuel injectors, injection pumps, fuel filters, high-pressure fuel components, seals and related fuel-system parts for applicable marine diesel engines.
Fuel-system specifications can change between engine generations, so a component should not be selected from appearance alone.
Provide the engine model, serial number and existing component number whenever possible.
Yanmar Cooling System Parts
We also supply and source Yanmar cooling-system components for recreational and commercial engines.
These can include:
- Sea water pumps
- Fresh water pumps
- Water pump repair kits
- Flexible impellers
- Heat exchangers
- Oil coolers
- Thermostats
- Gaskets
- O-rings
- Seals
- Cooling-system hoses and related components
Cooling-system arrangements can vary considerably between engine models and vessel installations.
Always verify the existing component before ordering a replacement.
Yanmar Turbocharger Parts
Turbocharged Yanmar marine engines can require replacement turbochargers or associated components during repair and overhaul work.
We can help source turbocharger assemblies and related parts for applicable Yanmar LY, LHA, LP, CX, SY, AY, EY and other turbocharged marine engine applications.
The correct turbocharger should be identified using the complete engine model, engine serial number and turbocharger identification or part number.
Do not assume that turbochargers from two engines within the same general Yanmar family are interchangeable.
Yanmar Marine Controls, Displays & Drive Systems
In addition to diesel engine parts, Yanmar has offered marine controls, instrumentation and propulsion products for compatible engine installations.
These include products and systems such as:
- VC10 Vessel Control System
- YD42 Multifunction Smart Display
- YD25 2.5-inch LCD Switch Panel
- B25 & C35 Electronic Panels
- Kanzaki Marine Gears
- SD60 Saildrive
Electronic displays, controls and propulsion components should always be matched to the applicable engine and vessel installation before ordering.
Yanmar Maintenance Kits
Regular maintenance is essential for reliable marine diesel engine operation.
We can source Yanmar maintenance kits as well as individual service components for scheduled maintenance.
Depending on the engine model and service requirement, maintenance components may include:
oil filters, fuel filters, impellers, O-rings, belts, gaskets, seals and zinc anodes.
Providing the exact engine model and serial number helps identify the correct service components for the individual engine.
Genuine, OEM & Replacement Yanmar Parts
Different customers have different requirements depending on the engine, vessel, budget and repair.
Subject to availability and the individual component, Alfa Marine Spare Parts can source genuine, OEM and replacement Yanmar marine engine parts.
If genuine Yanmar supply is specifically required, state this clearly when submitting your enquiry.
We do not recommend ordering critical engine components based solely on photographs or general engine-family descriptions. Correct identification should be based on the available engine and component information.
How to Order Yanmar Marine Engine Parts
Finding the correct Yanmar spare part starts with providing accurate information.
When submitting an enquiry, include:
- Complete Yanmar engine model
- Engine serial number
- Existing part number
- Part description
- Required quantity
- Delivery destination
If the existing part number cannot be identified, photographs of the component and engine identification plate can also be useful.
Providing this information from the beginning helps reduce the risk of ordering an incorrect component.
Can't Find Your Yanmar Part?
Not every Yanmar marine engine component is displayed in our online catalog.
If you cannot find the part you need, send us the Yanmar engine model, serial number, part number, required quantity and delivery destination.
Our team can review your request and help source the required component through our international supply network.
Whether you are maintaining a compact Yanmar sailboat engine, repairing a high-speed 6LY installation or sourcing components for a commercial EY engine, we can assist with your spare-parts enquiry.
Looking for Yanmar marine engine parts, diesel spares or maintenance components?