3TNV84T Engine Valve 129005-11100 129508-11100 for Yanmar Diesel Excavator Forklift Parts

Product Details

Product Overview

This high-performance engine valve is designed for the Yanmar 3TNV84T diesel engine, a power unit commonly found in compact construction equipment, material handling machinery, and agricultural vehicles. The part numbers 129005-11100 and 129508-11100 identify this as a precision-ground intake or exhaust valve, manufactured to meet OEM specifications for reliable sealing and gas flow management.

Engineered for durability in high-temperature combustion environments, this valve is a critical component for maintaining compression and engine efficiency. It is suitable for use in excavators, forklifts, bulldozers, loaders, and buses that utilize the Yanmar 3TNV84T diesel platform. As a direct replacement part, it ensures a seamless fit within the cylinder head assembly.

Key Features & Benefits

• Direct OEM Replacement: Matches original Yanmar part numbers 129005-11100 and 129508-11100 for guaranteed compatibility with 3TNV84T engines.
• High-Temperature Alloy Construction: Built with heat-resistant steel to withstand extreme combustion chamber conditions, reducing the risk of valve burn or warping.
• Precision Ground Stem & Face: Ensures a perfect seal against the valve seat, optimizing compression and preventing blow-by for maximum engine power output.
• Strict Quality Control: Each valve undergoes dimensional inspection and surface hardness testing to meet rigorous performance standards for heavy-duty applications.
• Extended Engine Life: Reduces wear on valve guides and seats, contributing to longer service intervals and lower overall maintenance costs.
• Global Sourcing Confidence: Manufactured in facilities with video outgoing inspection and machinery test reports available, providing full traceability.

Technical Specifications

OEM Cross-Reference

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

• Yanmar: 129005-11100, 129508-11100

These numbers correspond to both intake and exhaust valves used in the 3TNV84T cylinder head. Always verify your existing part number before ordering to ensure correct application.

Compatibility

This valve is specifically engineered for the Yanmar 3TNV84T diesel engine. It is commonly used in the following types of equipment:

• Excavators (Mini and Compact Models)
• Forklifts (Diesel-Powered Material Handlers)
• Bulldozers and Loaders
• Buses and Trucks (Small Utility Vehicles)
• Agricultural Tractors and Industrial Generators

Note: Fitment is inferred based on engine model compatibility. Please confirm your specific equipment’s engine code before purchase.

Global Supply & Distribution

We maintain a robust international supply chain to serve B2B clients across key industrial markets. Our distribution capabilities include:

• North America: Fast shipping to major ports (Los Angeles, Houston, New York) and inland industrial centers.
• Europe: Reliable delivery to Rotterdam, Hamburg, and Antwerp for quick distribution across the EU.
• Asia-Pacific: Direct logistics from manufacturing hubs in Guangdong and Guizhou to ports in Singapore, Busan, and Tokyo.
• Middle East & Africa: Efficient routing to Jebel Ali (Dubai) and Durban for regional distribution.
• South America: Established shipping lines to Santos and Callao.

We offer flexible shipping options including air freight for urgent orders and sea freight for bulk procurement. All exports comply with international trade regulations, and we provide full documentation including commercial invoices, packing lists, and certificates of origin.

Quality Assurance

• Manufacturing Standards: Produced under strict ISO-compliant processes with precision grinding and heat treatment.
• Testing: Each batch is subject to hardness testing, dimensional verification, and surface finish inspection. Video outgoing inspection and machinery test reports are available upon request.
• Warranty: Backed by a 6-month warranty against manufacturing defects, ensuring peace of mind for your repair or overhaul project.
• Traceability: Parts are marked with batch numbers for full quality traceability back to the production line.

FAQ

Q: How can I confirm this valve fits my Yanmar 3TNV84T engine?
A: Verify your existing valve part number. If it matches 129005-11100 or 129508-11100, this valve is a direct replacement. You should also check your engine serial number plate. If you have a different engine variant (e.g., 3TNV88), please contact us with your engine model and part number for cross-referencing.

Q: Is this valve for intake or exhaust use?
A: The part numbers 129005-11100 and 129508-11100 are used for both intake and exhaust valves on the 3TNV84T engine. They share the same dimensions and material specifications. We recommend ordering the quantity needed for a full valve set (typically 6 valves for a 3-cylinder engine) to ensure uniform performance.

Q: What maintenance steps should I take when installing new valves?
A: Always inspect the valve guides for wear and replace if necessary. Clean the valve seats thoroughly and perform a lapping procedure to ensure a gas-tight seal. Use new valve stem seals during installation. Torque the cylinder head bolts to manufacturer specifications and adjust valve clearances as per the Yanmar service manual for the 3TNV84T engine.