Yanmar 4TNV94 4TNE94 Piston Ring Set | OEM 127610-33612 129901-22050 129906-22050

Product Details

Product Overview

This premium piston ring set is specifically engineered for Yanmar 4TNV94 and 4TNE94 diesel engines. As a critical component for maintaining compression and oil control, this set ensures optimal engine performance and longevity. We supply these parts globally, serving major markets including North America, Europe, Southeast Asia, and the Middle East, with fast shipping to industrial hubs and major ports worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and reliable seal in Yanmar 4TNV94/4TNE94 engines.
• Superior Material: Constructed from high-grade ductile iron and steel, offering excellent wear resistance and thermal stability under high-compression conditions.
• Enhanced Oil Control: Advanced ring profile design minimizes oil consumption while maintaining proper cylinder wall lubrication.
• Reduced Friction: Optimized surface finish reduces friction against the cylinder liner, improving fuel efficiency and reducing engine wear.
• Long Service Life: Durable construction ensures extended operational intervals, reducing downtime and maintenance costs for heavy-duty applications.

Technical Specifications

OEM Cross-Reference

This piston ring set directly replaces the following Yanmar OEM part numbers, ensuring 100% compatibility with your engine’s original specifications:

• Yanmar: 127610-33612
• Yanmar: 129901-22050
• Yanmar: 129906-22050

Compatibility

This piston ring set is designed for the following Yanmar direct injection diesel engines:

• Yanmar 4TNV94 (4-cylinder, 3.05L) – Common in industrial generators, compressors, and pumps.
• Yanmar 4TNE94 (4-cylinder, 3.05L) – Widely used in construction machinery (e.g., mini excavators, skid steers) and agricultural tractors.

Typical applications include models from John Deere, Hitachi, and Kubota that utilize these Yanmar power units. Please verify your engine serial number for exact fitment.

Global Supply & Distribution

We are a leading exporter of engine parts, offering seamless logistics to support B2B clients worldwide.

• Worldwide Shipping: We ship to all major continents via air, sea, and express courier (DHL, FedEx, UPS).
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Japan, Australia, Singapore), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Fast Delivery: Stock items are dispatched within 24 hours. Express delivery to major ports (e.g., Rotterdam, Los Angeles, Shanghai) typically takes 3-7 business days.
• Trade Compliance: We handle all export documentation and customs clearance, ensuring smooth international transactions.

Quality Assurance

• Manufacturing Standard: Parts are manufactured in ISO 9001:2015 certified facilities, ensuring strict quality control throughout production.
• Testing: Each batch undergoes rigorous dimensional inspection, material hardness testing, and surface finish verification to meet OEM performance standards.
• Warranty: We offer a 12-month warranty against manufacturing defects, providing peace of mind for your fleet maintenance or repair project.

FAQ

Q1: Will this piston ring set fit my Yanmar 4TNV94 engine with a different serial number?

Yes, this set is designed for the standard 4TNV94 and 4TNE94 engine blocks. However, we recommend checking your engine’s serial number against the OEM part numbers (127610-33612, 129901-22050, 129906-22050) listed in your service manual to confirm compatibility, especially for later model variants.

Q2: What is the recommended installation procedure for these rings?

Installation should follow the Yanmar service manual. Key steps include: 1) Ensure the cylinder bore is within specifications and free of scoring. 2) Use a ring expander tool to avoid twisting the rings. 3) Stagger the ring end gaps 120 degrees apart (do not align with piston pin or thrust faces). 4) Lubricate the rings and cylinder wall with clean engine oil before assembly. Improper installation can cause ring breakage or excessive oil consumption.

Q3: How can I tell if my old piston rings need replacement?

Common symptoms include excessive blue smoke from the exhaust (oil burning), high oil consumption, reduced engine power, and poor compression readings (typically below 300-350 psi for a healthy 4TNV94). A compression test and a leak-down test are the most reliable diagnostic methods. If you see heavy carbon buildup or visible wear on the ring lands, replacement is necessary.