Whether engaged in light operation or heavy-duty voyages, marine engines always encounter harsh water conditions. Even minor component damage can lead to engine failure, regardless of the brand or cutting-edge features – Yanmar models are no exception. A crankpin is broken, and the crankshaft fault impacts the propeller movement. It is impossible to predict precisely when you may need a replacement part for your marine equipment. Mechanical downtime can be challenging on a cruising ship. Herein, high-quality Yanmar OEM spare parts take center stage.
Here is a synopsis of factors that make Yanmar components the ideal option for all vessels powered by the brand’s marine equipment.
Why Yanmar OEM Spare Parts Matter
As advised by the marine technicians, poor aftermarket parts can do more harm than good for the engine operations. When paired with corrosion and fuel contamination, these can cause premature wear in the pumps, filters, and fuel injectors. Genuine Yanmar marine spare parts are characterized by the same precision, material quality, dimensions, and corrosion-resistant coatings, ensuring resilient performance against machining tolerances, saltwater impact, thermal stress, and vibration. Only OEM parts carry a manufacturer’s warranty and assurance of emission standard compliance for supreme durability, engine health, and operational safety.
How and Where to Find the Yanmar OEM Spare Parts Information
To eliminate the confusion about the specific compatible components, Yanmar provides multiple resources to find the entire list of part numbers.
Engine Information Plate or the Data Plate
According to the official information in the manufacturer’s guide, there are information/data plates on the engine body. These plates contain the engine model name, serial number, and code information (varies from one model to another). The data plate is a flat metal structure attached to the engine’s body with four rivets or bolts.
A Label or Tag Attached to the Valve Cover
The most common location to find the metal tag or label is the area near the valve cover. This is the topmost part of the engine. These tags (mostly present on the fan side) are riveted or bolted metal plates depicting the engine ID.
Stamped Information on the Engine Block
If you have issues locating the plate, check the stamped information. It is another copy of the same data, but at a different location. The exact place of the stamped inscriptions may vary from one model to another. Other familiar places to find the stamped data include areas around the –
- Cylinder banks
- Crankcase
- Mounting points
Other Locations
The location of the data plates in old Yanmar engines and other installations may vary. Usually, such engines contain a data plate on the adapter plate. However, you may also find some models with plates riveted to the front or side of the engine block, or to a housing/breather bracket. The exact position depends on the engine design and layout.
Why Yanmar Uses Label & Stamping Redundancy
The data plate may wear down due to rusting or corrosion during the engine’s service life. Over time, the plate may become detached from the engine block or be lost due to the harsh environmental conditions. Therefore, Yanmar equipment manufacturers additionally etch or stamp the serial number directly on the engine block surface. Even if the plate is missing, vessel owners should not have traceability issues.
Yanmar OEM Spare Parts Finder Checklist & Safety Instructions
Yanmar marine engines in large carriers can be sizable and comprise an intricate component arrangement. Follow the checklist below to locate the codes and labels on the Yanmar equipment safely. We have gathered all the information from Yanmar’s official bulletins, engine documents, and instruction manuals.
#1. Clean the Equipment Surface
Over the long-term use, the engine surface may become dirty with thick layers of grease and grime deposits from oils, paint stains, lubricant coatings, or rust. These substances can entirely cover the data plates and etched stamping surfaces. Use permissible corrosion-resistant substances to remove the stubborn deposits that may make the part numbers illegible.
#2. Check the Valve Cover
The riveted data plate is typically located at the top or near the side of the valve cover that faces the cooling fan.
#3. Search for the Metal Plate
Yanmar engines and other marine devices feature metal plates on their equipment surfaces. These plates are securely fixed to the surface with 4 riveted bolts or screws.
#4. What to do if the Plate is Missing
The guide section on Yanmar’s official website suggests checking the following specific areas if the original label or plate is missing.
- Engine block
- Flat machined surfaces
- Areas near the cylinders
- Mounting webs
#5. Also, Inspect the Other Locations
The part numbers in some Yanmar marine engines are present near the cylinder bank, crankcase, or the rear surface. Alternatively, serial numbers in some models are also stamped in the engine block.
#6. Compare the Engine Documents and the Parts Manual
The part number information is present in both the engine documents and the parts manual. The manual is crucial for finding further information, presented in the form of sketches and illustrations.
#7. Keep Light, Mirror, and Magnifier Handy
Visibility can be an issue in tight spaces. Some stamps may have small fonts or faint lettering that are too difficult to read. Maintenance lights and magnifier glasses come to the rescue in such cases.
Buy Genuine Yanmar Parts at Competitive Prices
Marine engineers always recommend that fleet owners maintain a good stock of genuine components for emergencies during long voyages. The Alfa Marine Spare Parts team is pleased to present its extensive collection of Yanmar parts for marine engines, cooling systems, and more. Some components for old engines may be rare and hard to find. Please get in touch with us at your convenience with the required part number. We can arrange these parts in 5-7 business days.
Here we present a set of rare finds for Yanmar engine cooling systems, turbochargers, injection delivery units, and more.
X1522006721 – PRIMING PUMP
728171-23100 – ROD ASSY, CONNECTING
728374-92605 – GASKET SET
721575-22500 – RING SET
705311-23600 – METAL ASSY, CRANKPIN
129671-53001 – NOZZLE ASSY
129692-53000 – NOZZLE ASSY
129672-53010 – NOZZLE ASSY
129693-01341 – GASKET, HEAD
129553-01350 – GASKET, HEAD T=1.4
129573-01351 – GASKET
129573-53500 – NOZZLE ASSY
129570-53000 – NOZZLE ASSY
129499-51301 – VALVE ASSY, DELIVERY
129470-51080 – SEAL
129470-12330 – ELEMENT ASSY
129470-42003 – PUMP ASSY
129150-22300 – PIN
128990-49800 – THERMOSTAT, 71
129171-01330 – GASKET T=1,4
128374-01911 – GASKET
128370-13201 – GASKET SET
128270-01332 – GASKET
128271-01911 – GASKET
128170-51101 – PLUNGER
120651-55020 – ELEMENT, FUEL FILTER
119593-11110 – VALF, EXHAUST
119575-11910 – PACKING, VALVE
119575-11900 – INSULATOR
119175-53050 – NOZZLE ASSY
119574-11880 – SEAT
119175-53000 – NOZZLE ASSY
119172-53050 – NOZZLE ASSY
119173-53001 – NOZZLE ASSY
119173-11101 – VALVE, INTAKE
119171-11150 – SEAL, VALVE STEM
105582-52010 – PUMP ASSY, FUEL FEED
105582-49200 – THERMOSTAT
105311-23380 – BEARING, PIN U.S=0.25
105311-22090 – PISTON ASSY
129270-49400 – JOINT ASSY, PUMP
121575-49300 – JOINT, PIPE PT3/8
129400-77502 – HEATER, AIR
729490-28520 – SHAFT ASSY, BALANCER
729490-28510 – SHAFT ASSY, BALANCER
129795-01960 – PIPE, KNOCK
129400-28150 – GEAR, BALANCER
128170-14150 – NUT, CAM
145610-83880 – RETAINER
If you cannot find the required Yanmar part number here, please don’t hesitate to contact our customer support team.
