4TNV98 Piston With Pin 129907-22090 for Yanmar Diesel Engine Parts

Product Details

Product Overview

This high-quality piston assembly, specifically the 4TNV98 Piston With Pin (Part Number: 129907-22090), is a critical engine component designed for Yanmar 4TNV98 diesel engines. As a direct replacement part, it ensures the precise fit and performance required for demanding applications in construction, agriculture, and industrial machinery.

Manufactured to OEM specifications, this piston is engineered to restore compression and combustion efficiency in your Yanmar engine. Whether you are rebuilding a generator set, a marine engine, or a compact excavator, this component offers a reliable solution for maintaining peak engine performance.

Key Features & Benefits

• OEM Specification Fit: Manufactured to the exact dimensions of the original Yanmar 129907-22090 piston, ensuring a direct bolt-in replacement without modifications.
• Durable Construction: Built from high-strength alloy materials to withstand extreme combustion pressures and temperatures found in diesel engines.
• Complete Assembly: Includes the piston pin (wrist pin) pre-installed, simplifying the installation process and reducing labor time.
• Engine Rebuild Ready: Ideal for engine overhaul kits, providing the core component needed for a comprehensive 4TNV98 engine rebuild.
• Performance Restoration: Restores lost compression, reduces oil consumption, and eliminates piston slap noises in worn engines.
• Rigorous Quality Control: Each piston undergoes dimensional inspection and material verification to guarantee reliability.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct replacement for the following Yanmar original equipment manufacturer (OEM) part numbers:

• Yanmar OEM: 129907-22090
• Yanmar OEM: 129907-22091 (Superseded/Alternate)

Note: Always verify your engine’s serial number and existing part dimensions to confirm compatibility with this OEM reference number.

Compatibility

This piston is specifically designed for the Yanmar 4TNV98 diesel engine. It is commonly used in the following applications:

• Industrial Engines: Yanmar 4TNV98-T, 4TNV98-Z, 4TNV98-TE
• Construction Machinery: Mini excavators, compact track loaders, and skid steer loaders powered by 4TNV98 engines.
• Agricultural Equipment: Tractors, harvesters, and sprayers using Yanmar power units.
• Power Generation: Generator sets (Gensets) equipped with the 4TNV98 platform.

Global Supply & Distribution

We specialize in the international distribution of high-quality diesel engine parts. Our logistics network ensures efficient delivery to major industrial markets worldwide.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Japan, Singapore), Middle East (UAE, Saudi Arabia), and Africa (South Africa, Nigeria).
• Shipping Capabilities: We offer express courier (DHL, FedEx, UPS) for urgent orders, air freight for medium-sized shipments, and sea freight (FCL/LCL) for large volume orders to major ports like Los Angeles, Rotterdam, Shanghai, and Hamburg.
• Export Experience: With years of international trade experience, we ensure proper customs documentation and compliance with global shipping regulations.

Quality Assurance

We are committed to providing parts that meet or exceed OEM standards.

• Manufacturing Standard: Parts are produced under strict ISO 9001 quality management systems.
• Testing: Each batch undergoes dimensional verification. Video outgoing inspection and machinery test reports are available upon request.
• Warranty: All parts come with a standard 6-month warranty against manufacturing defects in materials and workmanship.

FAQ

Q1: Is this piston a direct fit for my Yanmar 4TNV98 engine?
A: Yes, this piston (129907-22090) is manufactured to OEM specifications for the 4TNV98 engine. It is a direct replacement part. However, we recommend verifying your engine’s serial number and the existing piston diameter to ensure it matches the standard OEM size before purchase.

Q2: Does the assembly include the piston rings?
A: This listing is for the piston and pin assembly only. Piston rings are typically sold separately or as part of a complete overhaul gasket set. For a full rebuild, you may need to order piston rings (part number varies by ring set) and cylinder liners separately.

Q3: What is the correct installation procedure for this piston?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Cleaning the cylinder bore thoroughly. 2) Lubricating the piston, pin, and cylinder walls with clean engine oil. 3) Using a proper piston ring compressor to install the assembly into the cylinder. 4) Ensuring correct orientation of the piston (usually marked with an arrow pointing towards the front of the engine). Always refer to the Yanmar 4TNV98 service manual for specific torque values and procedures.