129906-22050 Yanmar 4TNV94 Piston Ring 94mm For 4D94 DX55 Excavator MAHLE

Product Details

Product Overview

This is a high-quality 129906-22050 Piston Ring set manufactured by MAHLE, specifically designed for the Yanmar 4TNV94 diesel engine. With an exact bore size of 94mm, this piston ring set is a critical component for ensuring optimal compression, oil control, and overall engine performance.

Commonly used in Yanmar 4D94 engine applications, this part is a direct fit for various industrial and construction machinery, including the DX55 excavator. As a genuine MAHLE product, it meets the stringent Original Equipment Manufacturer (OEM) specifications, providing a reliable and durable solution for engine overhauls and repairs.

Key Features & Benefits

• OEM Precision Fit: Manufactured to the exact OEM number 129906-22050, guaranteeing a perfect fit for the Yanmar 4TNV94 engine without any modifications.
• Superior Material Quality: Constructed from high-grade materials to withstand extreme combustion pressures and temperatures, ensuring long service life and reduced wear.
• Optimized Oil Control: Engineered with advanced ring profiles for excellent oil scraping and minimal oil consumption, improving overall engine efficiency.
• Enhanced Compression: Provides a tight seal to maximize cylinder compression, leading to better fuel economy and increased engine power output.
• 100% New & Genuine: This is a brand-new, genuine MAHLE part, not a remanufactured or generic aftermarket component, ensuring the highest quality standards.
• Direct Replacement: A direct drop-in replacement for the original piston rings, simplifying the installation process and reducing downtime for your machinery.

Technical Specifications

OEM Cross-Reference

This piston ring set is a direct cross-reference for the following OEM part numbers:

• Yanmar OEM: 129906-22050
• Yanmar Engine Models: 4TNV94, 4TNE94, 4D94

Note: Please verify your engine model and existing part number to ensure compatibility.

Compatibility

This piston ring set is specifically designed for the following applications:

• Engine: Yanmar 4TNV94, 4TNE94, 4D94 series diesel engines.
• Excavator Model: Commonly used for the Yanmar DX55 excavator.
• General Application: Suitable for various construction machinery, agricultural tractors, and industrial equipment powered by these Yanmar engines.

Fitment is inferred based on the engine model; always cross-reference your specific equipment’s engine serial number.

Global Supply & Distribution

We are a leading supplier of premium diesel engine parts with a robust global distribution network. Our inventory is strategically located in Shanghai, China, enabling fast and efficient shipping to major ports and industrial centers worldwide.

We serve a diverse range of international markets, including:

• North America: USA, Canada, Mexico
• Europe: Germany, UK, France, Netherlands, Poland
• Asia-Pacific: Japan, South Korea, Australia, Singapore, Thailand
• Middle East & Africa: UAE, Saudi Arabia, South Africa, Nigeria
• South America: Brazil, Chile, Argentina

We offer flexible shipping options (air, sea, and express courier) and handle all export documentation to ensure a smooth and compliant transaction for our B2B partners.

Quality Assurance

As a genuine MAHLE product, this piston ring set is manufactured under strict quality control systems, adhering to international standards (ISO/TS 16949). Each ring undergoes rigorous testing for dimensional accuracy, material hardness, and surface finish to ensure it meets the high-performance demands of modern diesel engines.

Warranty: While specific warranty terms are to be confirmed with our sales team, we stand behind the quality of our products. We offer online support for any technical inquiries or post-purchase assistance.

FAQ

Q: Is this piston ring set a direct fit for my Yanmar 4TNV94 engine?
A: Yes, this is the OEM number 129906-22050 specifically designed for the Yanmar 4TNV94 engine with a 94mm bore. It is a direct, drop-in replacement. We always recommend verifying your engine model and existing part number before purchase.

Q: What is included in the set? Are there any installation tips?
A: The set includes all the necessary piston rings (compression rings and oil rings) for one cylinder. For installation, we recommend using a proper piston ring compressor to avoid damaging the rings. Ensure the cylinder bore is clean and free of debris. The ring gaps should be checked and staggered during installation.

Q: Can I install these rings without replacing the pistons?
A: While it is possible to replace only the rings, we strongly advise inspecting the pistons and cylinder liners for wear or scoring. For optimal performance and longevity, it is best practice to replace the piston rings in conjunction with new pistons and liners, or at a minimum, have the cylinder bore professionally honed.