Product Overview

This is a genuine-quality piston ring group designed for Yanmar 4TNE88 and 4TNV88 series diesel engines. Engineered for precise fitment and reliable performance, this component is essential for maintaining engine compression, oil control, and overall efficiency. We supply this critical part to a global network of distributors, engine rebuilders, and industrial equipment service centers, with major markets including North America, Europe, the Asia-Pacific region, and the Middle East.

Key Features & Benefits

• Precision Engineered: Manufactured to exact OEM specifications to ensure perfect fit and optimal sealing within the cylinder.
• Enhanced Durability: Made from high-grade materials to withstand high temperatures and pressures, providing long service life and reducing downtime.
• Optimal Oil Control & Compression: The specific ring design (88×2.0+4.0mm) is calibrated for the 4TNE88/4TNV88 engine to minimize oil consumption and maintain peak cylinder pressure.
• Reliable Performance: Restores engine power and efficiency, crucial for industrial, marine, and generator set applications.
• Complete Set: Sold as a full ring group for one piston, ensuring all components are matched for balanced performance.

Technical Specifications

OEM Cross-Reference

This part is a direct replacement for the following OEM number:

• Yanmar: YM729350-22501

Always verify the part number stamped on your original component or consult your engine service manual for confirmation.

Compatibility

This piston ring group is specifically designed for use in:

• Engine Models: Yanmar 4TNE88 and 4TNV88 diesel engines.
• Typical Applications: Commonly found in Yanmar-powered industrial machinery, generator sets, marine auxiliary engines, and pump units.
• For precise application, always cross-reference the engine model and serial number from the engine nameplate.

Global Supply & Distribution

We are a trusted supplier in the global automotive and industrial parts network. Our logistics are optimized for international B2B trade.

• Worldwide Shipping: We export to all major industrial regions, including North America (USA, Canada, Mexico), Europe (EU, UK), Asia-Pacific (Australia, Japan, Southeast Asia), and the Middle East.
• Efficient Logistics: Fast container (FCL/LCL) and air freight services to major ports and cargo hubs like Los Angeles, Rotterdam, Singapore, and Dubai.
• Trade Compliance: All shipments are prepared with professional commercial invoices, packing lists, and comply with international export regulations.
• Bulk & Wholesale: We specialize in supplying large orders to distributors and rebuilding shops, offering competitive pricing for volume purchases.

Quality Assurance

We partner with ISO-certified manufacturers to ensure every part meets rigorous performance standards.

• Manufacturing Standards: Components are produced to meet or exceed original Yanmar specifications for dimensional accuracy and material properties.
• Rigorous Testing: Critical dimensions and material hardness are tested to ensure proper function and durability under engine operating conditions.
• Warranty: All parts are backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.

FAQ

Q1: How do I confirm this is the correct piston ring set for my Yanmar engine?
A1: The surest method is to match the part number. Locate the engine model and serial number on the engine nameplate and consult the official Yanmar parts catalog. This ring set (YM729350-22501) is specified for the 4TNE88 and 4TNV88 engine families. You can also measure your old rings: the correct set will be 88mm in diameter with a 2.0mm and a 4.0mm ring.

Q2: What is included in a “Piston Ring Group”?
A2> A “Piston Ring Group” or set for one piston typically includes all the compression rings and oil control rings required for a single piston. For this Yanmar application, it includes the specific rings needed to rebuild one cylinder. You will need one group per piston for a complete engine overhaul.

Q3: Do you provide technical support for installation?
A3> While we supply the component, installation should be performed by a qualified diesel mechanic. Proper installation is critical and includes checking ring end-gap, side clearance, and correct ring orientation. We recommend referring to the Yanmar service manual for the 4TNE88/4TNV88 for the official torque specs and installation procedure to ensure optimal engine performance and longevity.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .