Reliable Yanmar Excavator Parts Supplier for Engine & Hydraulic Systems

Yanmar excavator parts are essential for compact performance, fuel efficiency, and precision control. YNF Machinery offers premium aftermarket parts for Yanmar mini and mid-size excavators with OEM-matched design and fast global supply.

Key Features:

  • Supports VIO series, B series, and SV series (e.g., VIO17, VIO25, VIO35, VIO55, SV100)

  • Engine parts for 3TNV, 4TNV88, and 4TNV98 series (piston, liner, gasket, pump, etc.)

  • Full system parts: engine, hydraulic, swing, final drive, seal kits, throttle motors

  • Ideal for compact excavators in construction, landscaping, rental fleets

  • Small MOQ, quick matching, and delivery to 60+ countries

  • Custom branding and technical support available

Yanmar Parts Series for Excavator Engine and Hydraulic Rebuilds

We supply engine assembly kits, hydraulic pump parts, control valves, throttle motors, fan blades, and seal kits for Yanmar excavators. Popular engine models supported include 3TNV70, 3TNV76, 4TNV88, and 4TNV98. Whether you need a 4TNV88 engine overhaul kit or a swing motor for the VIO35, we offer accurate matching and reliable supply with full support.

OEM standard Yanmar 12V relay for excavator
Precision gasket YNF16732 for diesel engine
Engine sealing components for Yanmar diesel models
Brass coolant sensor YNF16359 for excavator
12125044901 temperature sensor for engine control
YNF16357 gasket for diesel engine
High-quality gasket for mini excavator engine
Excavator thermostat housing gasket front view
Replacement water pump for Komatsu 4D106 engine

Why B2B Buyers Trust Our Yanmar Excavator Parts Worldwide

YNF delivers accurate, durable, and OEM-compatible Yanmar excavator parts. From engine rebuilds to hydraulic servicing, we help global buyers reduce downtime, simplify procurement, and ensure repair efficiency.

Perfect Fit for VIO & SV Series Excavators

Our parts are engineered to match OEM dimensions for popular Yanmar models such as VIO17, VIO35, and SV100. This ensures fast, accurate installation and eliminates compatibility concerns for technicians and distributors.

Long-Lasting Materials for Compact Equipment Demands

We use hardened steel, high-tension rubber, and wear-resistant alloys to produce components that meet the unique demands of mini excavators operating in tight, rugged, and high-cycle environments.

Expert Matching and Technical Support within 24 Hours

Our experienced team can identify the exact part needed based on machine model, part photos, or basic dimensions. B2B buyers benefit from fast quotations, precise part matching, and minimal procurement risk.

Small MOQ and Fast Global Shipping

We support trial orders and small batch shipments, ideal for workshops and local distributors. Parts are packed securely and shipped by air, sea, or courier, with worldwide delivery from China to your door.

Why Choose YNF Yanmar Parts to Keep Compact Excavators Running Strong

We supply high-performance Yanmar parts designed for tight-space operation, long service life, and fast installation. Backed by global logistics, quick response, and expert matching, YNF is your trusted partner for mini excavator parts.

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Yanmar Excavator Parts Applications

Mini Excavator Hydraulic Repair

Seal kits, valves, and hydraulic components for VIO17–VIO55 cylinder systems.

Engine System Overhaul

Full rebuild kits and engine assemblies for Yanmar 3TNV & 4TNV series.

Travel Motor & Swing System Replacement

Final drives and swing motors to ensure smooth and compact machine movement.

Rental Equipment Maintenance

Cost-effective parts support for repair of small fleet and rental excavators.

Complete Guide to Yanmar Excavator Components & Supported Models

Yanmar Excavator Models We Support

Model Parts Supplied
VIO17 Final drive, hydraulic cylinder kits, track adjuster
VIO35 3TNV88 engine parts, fan blade, control valve seals
VIO55 Swing motor, bucket cylinder kit, pilot valve
SV100 4TNV98 engine rebuild kit, throttle motor, filter kit

Popular Engine Series

  • 3TNV70 / 3TNV76: Common in mini excavators (17–35 class)

  • 4TNV88 / 4TNV94 / 4TNV98: Mid-size machines (55–100 class)

Ordering & Support

  • Match by machine model or engine number

  • OEM diagrams and dimension verification available

  • Fast response for global inquiries in English, Spanish, and Chinese

Packaging & Logistics

  • Standard export packaging (carton/crate)

  • Air, sea, and courier options available

  • Small MOQ & mixed part order support

FAQ Section

Q: Do you support full engine assembly kits for 4TNV88?
A: Yes, we provide piston sets, cylinder liners, bearings, gaskets, and crankshafts.

Q: Can I order 5–10 sets of seal kits for VIO25 and VIO55 together?
A: Absolutely. We support small mixed orders for all Yanmar mini excavator models.

What to Know About Yanmar Excavator Parts

Yanmar excavators require high-quality Yanmar Excavator Parts to operate efficiently and have a long lifespan. Each component, such as the engine and hydraulic system, plays a crucial role in ensuring the excavator runs smoothly. Authentic Yanmar Excavator Parts fit perfectly and are built to be durable, preventing unexpected breakdowns. For instance, the TB290 excavator is equipped with a turbocharged Yanmar engine that operates at 2,000 rpm. This design allows it to travel up to 3.1 mph while optimizing fuel efficiency. Utilizing genuine Yanmar Excavator Parts helps maintain these features and extends the life of your machine.

While aftermarket parts may seem more affordable, they can negatively impact performance. Genuine Yanmar Excavator Parts are specifically designed to match your machine, ensuring optimal functionality. Safeguard your excavator by consistently choosing original Yanmar Excavator Parts.

Key Takeaways

  • Use real Yanmar parts to keep your excavator working well. These parts fit right and lower the chance of problems.
  • Check and clean your excavator often to spot problems early. Look at the undercarriage and hydraulic system daily to avoid big repairs.
  • Buy Yanmar parts from trusted dealers. They sell real parts and give good advice to help you pick the right ones.
  • Take care of your excavator by oiling moving parts and checking fluids. This helps it work better and stops it from overheating.
  • Don’t use fake parts because they can damage your machine. They might also cancel your warranty. Use real parts for safety and trust.

Types of Yanmar Excavator Parts

Engine Components

Yanmar excavators use strong engines for steady performance in tough jobs. These engines are made with modern technology to last longer and work better. They are small but create high power, making them great for heavy tasks. Features like turbocharging save fuel while keeping the engine powerful.

Important engine parts include pistons, cylinder heads, fuel injectors, and cooling systems. These parts work together to keep the engine running smoothly. Taking care of these parts stops damage and keeps your excavator ready for hard work.

Hydraulic System Parts

The hydraulic system helps Yanmar excavators move accurately and work efficiently. Yanmar uses smart technology to make the hydraulic system better. For example, the LS System controls oil flow to save energy and improve performance. Separate pumps let the machine handle multiple tasks at once without slowing down.

Here’s how Yanmar hydraulic system parts improve efficiency:

Feature Description
LS System Matches oil flow to needs, saving energy and reducing waste.
Independent Pumps Controls major cylinders separately for smooth multitasking.
Fuel Efficiency Improves fuel use by 20% compared to older models.

These features make Yanmar excavators great for precise and reliable work. Checking hoses, seals, and pumps often keeps the system working well.

Undercarriage Parts

The undercarriage supports Yanmar excavators and keeps them stable while working. It includes tracks, rollers, idlers, and sprockets, all made to handle tough conditions. Yanmar uses strong materials to make these parts last longer and carry heavy loads.

Taking care of the undercarriage helps your excavator last longer and avoids expensive fixes. Cleaning tracks and checking rollers often keeps everything moving smoothly. Whether on rocky ground or soft dirt, Yanmar’s undercarriage works well in all situations, giving dependable results every time.

Electrical and Control Systems

Yanmar excavators use advanced systems for accurate and efficient work. These include wiring, sensors, control panels, and onboard computers. Each part helps the excavator follow operator commands correctly.

The control systems are made to be easy to use. Joystick controls and digital screens make managing the machine simple. Sensors check important things like engine heat and hydraulic pressure. This prevents damage and keeps the machine working well.

Check wires and connectors often to keep these systems working. Dust and water can cause problems, so clean and seal exposed parts. If controls act strangely, look for loose wires or broken sensors. Fixing issues early avoids big repairs and delays.

Tip: Always choose genuine Yanmar electrical parts for the best results. Aftermarket parts might not work as well and could cause problems.

Attachments and Accessories

Yanmar excavators can do many jobs with different tools. These attachments make the machine more useful for various tasks. Popular tools include buckets, hydraulic breakers, augers, and grapples.

Buckets come in many sizes and shapes for specific jobs. Narrow buckets are great for digging trenches, while wide ones move materials easily. Hydraulic breakers break concrete and rocks fast. Augers dig holes quickly for posts or foundations.

Here are some tips about choosing attachments:

  • Yanmar’s mini excavators have designs for tight spaces, improving safety.
  • Wacker Neuson says operator skill and total costs, including tools, matter.

Pick attachments based on the work and ground type. Keep tools in good shape to ensure they stay safe and effective.

Note: Genuine Yanmar attachments fit perfectly with Yanmar excavators. They improve performance and reduce wear, making them a smart long-term choice.

Importance of Genuine Yanmar Parts

Benefits of Using Genuine Yanmar Parts

Using real Yanmar parts helps your excavator work its best. These parts are made to fit your machine perfectly, ensuring smooth operation. They are built with strong materials, so they last longer and need fewer replacements.

Choosing genuine Yanmar parts protects your machine and your money. These parts keep your excavator running efficiently, even during tough jobs. They also make your machine last longer, saving you repair costs over time.

Tip: Genuine parts come with a guarantee, so you know they’re reliable and high-quality.

Risks of Aftermarket Parts

Aftermarket parts might cost less, but they can cause problems. These parts aren’t made specifically for Yanmar machines, which can lead to poor performance and breakdowns. They are often made with weaker materials, so they wear out faster.

Using aftermarket parts can cancel your Yanmar warranty. This means you lose Yanmar’s support and protection for your machine. These parts can also harm other components, leading to costly repairs.

Alert: Stick to genuine parts to keep your excavator dependable for years.

How to Identify Genuine Yanmar Parts

It’s important to spot real Yanmar parts to avoid fakes. Look for the Yanmar logo and part number on the package. Genuine parts often include a certificate or guarantee of authenticity.

Buy from authorized dealers to ensure you get real Yanmar parts. They offer expert advice and quality products for your machine. If shopping online, check reviews and seller ratings to confirm they sell genuine items.

Note: Genuine Yanmar parts are made for quality and dependability, making them the smartest choice for your excavator.

Commonly Replaced Yanmar Excavator Parts

Filters (Oil, Air, Hydraulic)

Filters are important for keeping your Yanmar excavator working well. Oil filters clean the engine oil, helping the engine stay efficient. Air filters block dust and dirt from entering the engine, avoiding damage. Hydraulic filters keep the hydraulic fluid clean, which is key for smooth operation.

Changing filters often helps your excavator perform its best. Dirty filters can hurt performance and damage other parts. Check filters during regular maintenance and replace them with good-quality ones. Genuine Yanmar filters fit perfectly and last longer, keeping your machine in great shape.

Tip: Use only genuine Yanmar filters to protect your excavator and avoid expensive repairs.

Tracks and Undercarriage Components

Tracks and undercarriage parts face a lot of wear during use. Tracks give stability and grip, while rollers, idlers, and sprockets help the machine move. These parts can wear out over time, especially in tough conditions.

Look at the undercarriage often for damage or heavy wear. Replace worn tracks and parts quickly to stop bigger problems. High-quality parts keep your Yanmar excavator steady and dependable. Genuine Yanmar tracks and undercarriage parts are made for hard jobs and last longer.

Alert: Skipping undercarriage care can cause expensive breakdowns and delays.

Hydraulic Hoses and Seals

Hydraulic hoses and seals are vital for your excavator’s hydraulic system. Hoses carry hydraulic fluid, and seals stop leaks and keep pressure steady. Over time, hoses can crack, and seals may wear out, lowering efficiency.

Check hoses and seals often for wear or damage. Replace them with strong, reliable parts to avoid hydraulic problems. Genuine Yanmar hoses and seals handle high pressure and last a long time.

Note: Aftermarket hydraulic parts can lower system performance and need frequent replacements.

Engine Belts and Cooling System Parts

Engine belts and cooling system parts help your Yanmar excavator work well. They keep the engine cool and running smoothly during hard jobs. Ignoring these parts can cause overheating, poor performance, and expensive fixes.

Belts move power to systems like the alternator and cooling fan. Over time, belts may crack, wear out, or loosen. Check belts often and replace damaged ones to keep your excavator working its best. Cooling system parts, like radiators, thermostats, and water pumps, control engine heat. These parts stop overheating and protect the engine from harm.

Using real Yanmar belts and cooling parts has big advantages. For example, Operator John Doe cut downtime by 70% after upgrading to the 4D95S engine with genuine parts. This change added more work hours and income. Industrial Equipment, Inc. improved reliability by using the same engine and parts for their fleet. This boosted customer satisfaction and repeat business.

Case Study Key Results
Operator John Doe Reduced downtime by 70% with the 4D95S engine and genuine parts, increasing work hours and earnings.
Industrial Equipment, Inc. Improved fleet reliability with the 4D95S engine, leading to happier clients and more repeat business.

To keep your excavator in great shape, check belts for cracks and cooling parts for leaks. Replace worn parts with genuine Yanmar components for better durability and fit. Authentic parts handle tough jobs and make your machine last longer.

Tip: Follow the maintenance schedule to avoid breakdowns and keep your excavator efficient.

Maintenance Tips for Yanmar Excavators

Regular Inspection and Cleaning

Checking and cleaning your Yanmar excavator often is very important. Daily inspections help you find problems like leaks or worn parts early. Focus on the undercarriage and hydraulic parts since they handle the most stress. Cleaning dirt from moving parts and hydraulic systems keeps everything working smoothly.

Steps to care for your excavator:

  1. Look for damage or leaks every day.
  2. Clean dirt off tracks, rollers, and hydraulic parts.
  3. Check filters and replace them if they’re dirty.
  4. Adjust track tension to the correct level.

Tip: Cleaning regularly improves how your excavator works and makes it last longer.

Proper Lubrication and Fluid Management

Lubricating and managing fluids are key to keeping your excavator reliable. Grease moving parts like the boom, arm, and bucket joints to reduce wear.

Check engine oil, hydraulic fluid, and coolant levels often. Change these fluids as recommended to avoid damage. Using good-quality fluids helps your machine run better and prevents overheating or breakdowns.

Maintenance Task Benefit
Greasing moving parts Lowers friction and makes parts last longer.
Fluid level checks Stops overheating and keeps things running smoothly.
Timely fluid changes Prevents damage and keeps performance high.

Note: Use only genuine Yanmar fluids and lubricants for the best results.

Troubleshooting Common Issues

Even with good care, problems can happen. Knowing how to fix common issues saves time. If the hydraulic system loses power, check for leaks or broken hoses. Replace worn seals to fix pressure problems.

If the engine gets too hot, check the cooling system. Look for radiator leaks or loose belts on the cooling fan. Fix these quickly to avoid bigger problems.

Common troubleshooting tips:

  • If the machine won’t start, check for loose or rusty battery connections.
  • If controls don’t work, inspect sensors and wires.
  • Replace clogged filters to improve performance.

Alert: Small problems can turn into big repairs if ignored. Fix issues quickly to keep your Yanmar excavator working well.

Scheduling Preventative Maintenance

Preventative maintenance helps your Yanmar excavator work well and avoid big repairs. Regular checks find small problems before they become serious issues. A good maintenance plan makes your machine last longer and stay reliable.

Start by checking your excavator every day. Pay attention to parts like bucket teeth, sprockets, and tracks. Look for cracks, wear, or other damage. Fixing these early stops bigger problems and keeps your machine ready to use.

Weekly care is also important. Clean the undercarriage to remove dirt and rocks. Dirt can cause parts to wear out faster and lead to repairs. A clean undercarriage helps your excavator run smoothly and protects its parts.

Make a schedule that matches how much you use your excavator. Use a notebook or app to track daily, weekly, and monthly tasks. This keeps you organized and ensures you don’t miss important checks.

Maintenance Task How Often Why It Helps
Check bucket teeth Every day Stops damage from worn-out teeth.
Clean undercarriage Weekly Prevents dirt from harming parts.
Change filters Monthly Keeps systems working properly.

Tip: Follow your schedule and always use real Yanmar parts. This keeps your excavator running its best and lasting longer.

By taking care of your machine regularly, you save money and avoid delays. Good maintenance lowers the chance of breakdowns and keeps your excavator ready for tough jobs.

Where to Buy Genuine Yanmar Parts

Authorized Dealers vs. Online Stores

When buying Yanmar excavator parts, you have two main choices: authorized dealers or online stores. Authorized dealers focus on selling real Yanmar parts and can give expert advice. They help you find the exact part your machine needs. However, their prices might not always be clear, and they may not have every part in stock.

Online stores are more convenient. You can shop anytime and compare many options. But, the quality of parts depends on the seller. Some parts might be fake, and customer service can vary.

Feature Authorized Dealers Online Suppliers
Expertise and Support Expert advice and technical help Limited support
Access to Parts Genuine parts available on-site Wide selection but possible delays
Authenticity Always genuine parts May include fake parts
Customer Service Strong focus on helping customers Service quality varies
Selection Limited to stock on hand Large catalogs to browse
Pricing Transparency Prices not always clear Easy to compare prices

Your choice depends on what matters most to you. If you want real parts and expert help, go to an authorized dealer. If you prefer convenience and price options, online stores might work better.

Tips for Finding Reliable Suppliers

Choosing a good supplier is key to keeping your Yanmar excavators in great shape. Here are some tips to find the right one:

  • Check for Authorization: Make sure the supplier is an official Yanmar dealer. They guarantee real parts and expert advice.
  • Read Reviews: Look at customer feedback. Good reviews mean the supplier is trustworthy.
  • Ask for Proof: Real Yanmar parts come with certificates or guarantees. Always ask for these.
  • Compare Prices: Be careful with very low prices—they might mean fake parts.
  • Test Customer Service: Good suppliers answer questions quickly and clearly.

Tip: Choose suppliers with a strong history of selling real Yanmar parts. This keeps your machine running smoothly.

Benefits of Purchasing from Authorized Dealers

Buying from authorized dealers has many benefits. These dealers know a lot about Yanmar parts and machines. They can help you pick the right parts for your excavator.

Authorized dealers only sell real parts. You can trust their parts will fit perfectly and last longer. This lowers the chance of breakdowns and keeps your machine reliable.

They also offer great customer service. Many dealers provide warranties, giving you peace of mind. This protects your investment and ensures satisfaction.

  • A former Yanmar distributor director praised the 4jh series engines for their low breakdown rates.
  • Many OEM manufacturers use Yanmar diesel engines, showing their strong reputation.
  • Yanmar engines built for marine use are known for being tough and reliable.

Note: While online stores are convenient, authorized dealers offer better expertise and real parts. They are the best choice for buying Yanmar parts.


Knowing Yanmar excavator parts helps keep your machine working well. Parts like pumps, cylinders, and valves are important for smooth operation. Taking care of these parts stops expensive breakdowns and makes your equipment last longer. Using real Yanmar parts ensures they fit right and work better, lowering the chance of sudden problems.

Check your Yanmar excavators every day and replace damaged parts quickly. Buy parts from trusted sellers to get real ones that protect your warranty and machine. These steps save money and keep your Yanmar excavators ready for tough jobs.

FAQ

Why are genuine Yanmar parts better than aftermarket ones?

Genuine Yanmar parts are made to fit your excavator perfectly. They last longer and keep your machine working well. Aftermarket parts might not be as good, causing more wear and possible damage.

Tip: Always pick genuine parts to protect your machine.

How often should I change filters on my Yanmar excavator?

Change filters as the manufacturer suggests or during regular checks. If you use your machine a lot, check filters more often. Clean filters help the engine work better and stop dirt from causing harm.

Can I use other brand attachments with my excavator?

You can, but it’s not a good idea. Other brand attachments might not fit right or work as well. Yanmar attachments are made to fit and work safely with your machine.

How can I tell if a part is genuine?

Check for the Yanmar logo, part number, and an authenticity certificate. Buy from authorized dealers or trusted sellers to avoid fake parts. If shopping online, read reviews and check seller ratings.

Alert: Fake parts can damage your machine and cancel its warranty.

What should I do if my excavator overheats?

Look at the cooling system for leaks or clogs. Check the radiator, belts, and coolant levels. Replace broken parts quickly. Regular care stops overheating and keeps your machine running well.

Note: Use real cooling system parts for better performance.

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