Yanmar 4TN100 Engine Valve Seat 129105-15201 OEM Replacement Part

Product Details

Product Overview

This Yanmar 4TN100 Valve Seat (OEM Part Number: 129105-15201) is a premium replacement component engineered for optimal sealing and combustion efficiency in Yanmar 4TN100 series diesel engines. Designed for the global aftermarket, this part is suitable for a wide range of industrial, agricultural, and marine applications. We offer worldwide shipping, serving major markets including North America, Europe, Asia-Pacific, the Middle East, and Africa, ensuring fast and reliable delivery to your port or warehouse.

Key Features & Benefits

• Precision Fitment: Manufactured to OEM specifications (129105-15201) for a direct, seamless replacement on Yanmar 4TN100 engines.
• Durable Material: Constructed from high-grade alloy steel, providing excellent wear resistance and longevity under high-temperature, high-pressure combustion conditions.
• Enhanced Seal: Ensures a tight valve-to-seat seal, optimizing compression, reducing blow-by, and improving overall engine performance and fuel economy.
• Rigorous Testing: Each valve seat undergoes strict quality control checks, including dimensional accuracy and hardness testing, to guarantee reliability.
• Cost-Effective Solution: A high-quality aftermarket alternative to the original Yanmar part, offering significant savings without compromising on performance.

Technical Specifications

OEM Cross-Reference

This valve seat directly replaces the following genuine Yanmar part number:

• Yanmar: 129105-15201

Note: This is a direct cross-reference. No modifications or additional components are required for installation.

Compatibility

This valve seat is specifically designed for use in the following Yanmar engine models:

• Yanmar 4TN100 Series (including 4TN100E, 4TN100L)

Common Applications: Yanmar industrial engines, agricultural tractors, construction machinery, and generator sets. Always verify your engine model and serial number to ensure correct fitment.

Global Supply & Distribution

As a dedicated supplier of heavy-duty engine parts, we provide a seamless global sourcing experience:

• Worldwide Shipping: We ship to all major ports and industrial centers worldwide via air, sea, and express couriers (DHL, FedEx, UPS, TNT).
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Japan, China, Australia), Middle East (UAE, Saudi Arabia), and Africa (South Africa, Nigeria).
• Fast Delivery: Standard lead times of 3-7 working days for express shipping, and 15-30 days for sea freight.
• Trade Compliance: We have extensive export experience and ensure all documentation (commercial invoice, packing list, certificate of origin) is provided for smooth customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001:2015 certified facilities, ensuring consistent quality and traceability.
• Warranty: All parts are backed by a 12-month warranty against manufacturing defects.
• Testing: Each batch is tested for hardness, dimensional accuracy, and surface finish to meet or exceed OEM performance.

FAQ

Q1: Is this valve seat a direct replacement for the original Yanmar part (129105-15201)?
Yes, this is a 100% direct aftermarket replacement. It is manufactured to the same dimensions and material specifications as the original Yanmar part, requiring no modifications for installation.

Q2: How many valve seats are needed for a complete rebuild of a Yanmar 4TN100 engine?
A Yanmar 4TN100 engine has 4 cylinders, each with 1 intake and 1 exhaust valve, totaling 8 valves. You will need 8 valve seats for a full rebuild (4 intake and 4 exhaust). Please confirm if you require a set of 8 or individual pieces.

Q3: What is the recommended installation procedure for these valve seats?
Installation should be performed by a qualified diesel mechanic. The cylinder head must be properly cleaned and the valve seat bore checked for wear. The new seat should be pressed or shrunk-fit into the cylinder head. After installation, a valve seat cutter or lapping compound should be used to ensure a perfect seal with the new valve. Always follow the engine service manual for specific torque and clearance specifications.