3TNE68 Valve Seat 129100-51300 for Yanmar Engine Parts – Construction & Industrial

Product Details

Product Overview

This high-precision Valve Seat, identified by the OEM part number 129100-51300, is a critical component designed for the Yanmar 3TNE68 diesel engine. As a direct replacement part, it is engineered to restore the sealing integrity of the combustion chamber, ensuring optimal compression and engine performance. This component is essential for maintaining the efficiency and longevity of your Yanmar power unit.

Manufactured by, this valve seat is a durable, OEM-size replacement built to withstand the high temperatures and pressures of diesel combustion. It is a common service item for engines used in demanding environments, from construction sites to agricultural fields and marine vessels. While specifically designed for the 3TNE68 model, it is critical to verify compatibility with your specific engine serial number to ensure a perfect fit.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM specifications (OEM Size) to ensure a perfect seal and consistent valve clearance, preventing gas leakage and power loss.
• High-Temperature Resistance: Constructed from durable materials capable of withstanding the extreme thermal and mechanical stress found in a diesel engine cylinder head.
• Direct Fit Replacement: Designed as a direct drop-in replacement for the original Yanmar part (129100-51300), minimizing installation time and machining requirements.
• Enhanced Durability: Built to provide a long service life, reducing the frequency of top-end overhauls and lowering overall maintenance costs for your equipment.
• Versatile Application: Suitable for a wide range of equipment powered by the Yanmar 3TNE68 engine, including construction machinery, generators, and agricultural tractors.
• Rigorous Quality Control: Each unit undergoes outgoing inspection and is backed by a machinery test report, ensuring reliable performance upon installation.

Technical Specifications

OEM Cross-Reference

This component is a direct replacement for the following original equipment manufacturer (OEM) numbers:

• Yanmar: 129100-51300
• : HD-3TNE68-VS (Internal Reference)

Note: This list is based on the primary OEM number provided. Always cross-reference your old part with the images and dimensions to confirm fitment.

Compatibility

This valve seat is commonly used for the following engine and equipment applications:

• Engine Models: Yanmar 3TNE68, Yanmar 3TNE68-A, Yanmar 3TNE68-BJ
• Equipment Applications: Construction machinery, Industrial generators, Agricultural tractors & tillers, Marine auxiliary engines, Material handling equipment (forklifts).

Disclaimer: This part is specifically designed for the 3TNE68 engine block. While it is commonly used in the listed applications, we recommend verifying the engine model stamp on your block to ensure fitment.

Global Supply & Distribution

maintains a robust global supply chain to ensure fast and reliable delivery to international buyers. We serve a wide range of markets, including:

• North America: Quick shipping to industrial hubs in the USA, Canada, and Mexico.
• Europe: Efficient logistics to major ports like Rotterdam, Hamburg, and Antwerp.
• Asia-Pacific: Direct service to Japan, South Korea, Australia, and Southeast Asian markets.
• Middle East & Africa: Reliable shipping to Dubai, Jeddah, and major African industrial centers.

We specialize in export documentation and customs compliance, ensuring a smooth purchasing experience for B2B clients worldwide.

Quality Assurance

We are committed to providing parts that meet or exceed original equipment standards. Our quality assurance process includes:

• Incoming Material Inspection: All raw materials are tested for hardness and composition.
• Dimensional Accuracy: Parts are machined to exact OEM specifications and verified with precision tools.
• Video Outgoing Inspection: A video inspection report is provided upon request, giving you visual confirmation of the product before shipment.
• Machinery Test Report: A report is available detailing the testing procedures and results.
• Warranty: This product is backed by a standard 6-month warranty against manufacturing defects.

FAQ

Q: Is this valve seat a direct fit for my Yanmar 3TNE68 engine?
A: Yes, this part (129100-51300) is specifically designed as a direct replacement for the Yanmar 3TNE68 diesel engine. It is manufactured to OEM size standards. However, we always recommend comparing the dimensions and shape with your original part to ensure a perfect match.

Q: What is the recommended installation procedure for a valve seat?
A: Installation should be performed by a qualified diesel mechanic. The process typically involves heating the cylinder head and pressing the new seat into the counterbore. After installation, the valve seat must be cut and lapped to ensure a perfect seal with the new valve. It is highly recommended to replace valve guides and seals at the same time.

Q: How can I verify the quality of this part before I make a large order?
A: We offer a video outgoing inspection service. Before your order ships, we can provide a video showing the specific part you ordered, including its dimensions and finish. Additionally, we can provide a machinery test report upon request. For large wholesale orders, samples are available for evaluation.