129907-22050 Piston Ring for Yanmar 4TNV98 4TNE98 Engine | Construction Agriculture Marine

Product Details

Product Overview

This premium piston ring set, identified by OEM part number 129907-22050, is specifically engineered for the Yanmar 4TNV98 and 4TNE98 diesel engine series. As a critical component within the engine’s power assembly, this piston ring ensures optimal compression, oil control, and thermal transfer during operation.

Manufactured to OEM size specifications, this piston ring set is designed as a direct replacement for the original Yanmar components. It is commonly used in a variety of heavy-duty applications including construction machinery, agricultural equipment, industrial power units, generator sets (gensets), marine propulsion systems, and material handling equipment. Whether you are overhauling a mini-excavator, a tractor, or a stationary generator, this part is a reliable choice for restoring engine performance.

As part of the brand, this component undergoes rigorous quality checks and is ready for immediate global distribution from our facility in Guangdong, China. Ensure your Yanmar engine maintains peak efficiency with this high-quality piston ring set.

Key Features & Benefits

• Precise OEM Fitment: Manufactured to the exact OEM dimensions (129907-22050) for the Yanmar 4TNV98 and 4TNE98 engine blocks, guaranteeing a perfect seal and hassle-free installation.
• Superior Material Composition: Constructed from high-grade, wear-resistant materials to withstand extreme combustion pressures and temperatures, significantly extending engine life.
• Enhanced Oil Control: Engineered ring profile ensures excellent oil scraping and distribution, reducing oil consumption and preventing carbon buildup in the combustion chamber.
• Optimal Compression: Delivers consistent compression pressure for improved fuel efficiency, higher power output, and reliable cold starts.
• Durability Assurance: Backed by a 6-month warranty and rigorous factory testing, including video outgoing inspection, to ensure defect-free performance.
• Versatile Application: Suitable for a wide range of sectors including construction, agriculture, marine, and industrial genset applications, making it a versatile stock item for dealers.

Technical Specifications

OEM Cross-Reference

This piston ring set is a direct replacement for the following original Yanmar part numbers:

• OEM Number: 129907-22050

Note: Always verify the specific ring configuration (top, second, oil) against your original parts to ensure compatibility with your specific engine variant.

Compatibility

This piston ring set is specifically designed for the Yanmar 4TNV98 and 4TNE98 diesel engine platforms. It is commonly used for maintenance and repair in the following equipment categories:

• Construction: Mini excavators, compact track loaders, skid steer loaders.
• Agriculture: Tractors, harvesters, tillers.
• Industrial: Forklifts, air compressors, pumps.
• Marine: Auxiliary engines, small workboats.
• Power Generation: Diesel generator sets.

Fitment is inferred based on the engine model. We recommend cross-referencing your engine serial number to confirm specific compatibility.

Global Supply & Distribution

We maintain a robust global supply chain to ensure fast and reliable delivery to international buyers. Our primary distribution hub in Guangdong, China, provides excellent access to major shipping ports, allowing us to serve markets across North America, Europe, Southeast Asia, the Middle East, Africa, and Oceania.

We offer flexible shipping options including sea freight (FCL/LCL), air freight, and express courier services (DHL, FedEx, UPS). Typical transit times to major industrial centers such as Los Angeles, Rotterdam, Dubai, and Singapore are optimized to minimize downtime for your machinery. Our team has extensive experience in export documentation and customs clearance, ensuring a smooth transaction for B2B buyers worldwide.

Quality Assurance

Every piston ring set undergoes strict quality control procedures in our facility. We adhere to international manufacturing standards to ensure dimensional accuracy and material integrity.

• Testing: Each batch is subject to a Machinery Test Report to verify performance characteristics. Video Outgoing Inspection is provided upon request.
• Certification: Parts are manufactured in an ISO-compliant facility (certifications available upon request).
• Warranty: We stand behind our product with a 6-month warranty against manufacturing defects.
• Support: Our technical team provides ongoing online support even after the warranty period to assist with installation and troubleshooting.

FAQ

Q: How do I confirm this piston ring fits my Yanmar engine?
A: Verify your engine model number (stamped on the engine block data plate). This set is designed for the 4TNV98 and 4TNE98 models. Also, check your old piston ring or parts manual for the OEM number 129907-22050 to confirm a direct match. If your engine uses a different ring profile, please contact us with your engine serial number for verification.

Q: What is the recommended installation procedure for these rings?
A: Installation requires standard engine overhaul tools. Ensure the cylinder bore is deglazed or re-honed to the correct cross-hatch pattern. Lubricate the rings and piston with clean engine oil. Use a piston ring expander to avoid breaking the rings. Stagger the ring gaps (typically 120 degrees apart) and ensure they are not aligned with the piston pin or thrust faces. Always follow the Yanmar service manual for your specific engine model for torque specifications and gap measurements.

Q: What is the typical lifespan of this piston ring set?
A: The lifespan depends heavily on operating conditions, maintenance schedules, and fuel quality. In standard industrial or agricultural use with proper oil changes, these rings can last 4,000 to 8,000 hours. Factors such as dust ingestion, overheating, or poor lubrication will significantly reduce service life. Regular oil analysis and compression tests can help monitor ring condition.