Product Overview

This is a premium replacement Valve Seat designed for Yanmar 4TN100 diesel engines. Engineered for durability and precise fitment, it is an essential component for engine overhauls and repairs. We supply this critical part to a global network of distributors, engine rebuilders, and heavy equipment service centers, with major markets in North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and optimal sealing performance.
• High-Temperature Durability: Made from specialized alloys to withstand extreme combustion chamber temperatures and prevent wear.
• Optimized Heat Transfer: Ensures efficient heat dissipation from the valve to the cylinder head, promoting engine longevity.
• Corrosion Resistance: Built to resist corrosion and pitting, maintaining integrity in demanding operating conditions.
• Cost-Effective Solution: A reliable aftermarket alternative that delivers OEM-level performance without the premium cost.

Technical Specifications

OEM Cross-Reference

This part is a direct replacement for the following OEM numbers:

• Yanmar: 129105-15201
• Cross-reference with your engine’s service manual to confirm compatibility.

Compatibility

This valve seat is specifically designed for use in the Yanmar 4TN100 diesel engine. This engine is commonly found in a range of industrial and construction equipment, including:

• Yanmar-powered excavators (mini and mid-size models)
• Yanmar-powered wheel loaders
• Industrial generators and power units
• Marine auxiliary engines

Always verify the specific engine model and serial number before purchase.

Global Supply & Distribution

We are a leading B2B supplier of heavy-duty engine components with extensive international logistics expertise. Our capabilities include:

• Worldwide Shipping: Reliable export to North America (USA, Canada), Europe (UK, Germany, Netherlands), Asia-Pacific (Australia, Japan, Singapore), and the Middle East (UAE, Saudi Arabia).
• Fast Delivery Network: Consolidated shipments to major global ports and logistics hubs for efficient clearance and onward distribution.
• Trade Compliance: All documentation (commercial invoice, packing list, certificate of origin) is prepared to meet international customs requirements.
• Bulk & Container Orders: Competitive FOB/CIF quotes available for large quantity purchases.

Quality Assurance

Every component in our catalog is sourced from ISO-certified manufacturing partners committed to quality.

• Manufacturing Standard: Produced in facilities adhering to ISO 9001 quality management systems.
• Rigorous Testing: Parts undergo dimensional checks, material analysis, and hardness testing to ensure they meet or exceed original performance specifications.
• Warranty: Backed by a standard 12-month warranty against manufacturing defects, providing peace of mind for your business.

FAQ

Q1: How do I confirm this valve seat will fit my specific Yanmar 4TN100 engine?
A1: The most reliable method is to match the part number. Check your engine’s service parts manual or the original part removed for the number 129105-15201. You can also provide your engine’s full model and serial number for our technical team to verify.

Q2: What is the recommended installation procedure for this valve seat?
A2: Valve seat installation is a precision machining operation. It requires the cylinder head to be heated (or the seat cooled) for interference fit installation, followed by machining of the seat faces to the correct angles and widths. This procedure should be performed by a qualified machinist or engine rebuilder with proper tools.

Q3: Do you offer technical support for engine rebuilds using this part?
A3: Yes. As a specialist supplier, we can provide general guidance on part identification and compatibility. For detailed technical procedures, we recommend consulting the official Yanmar service manual or the certified workshop performing the rebuild.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .