Product Overview

This professional-grade piston ring set is engineered for Komatsu excavator engines, ensuring optimal compression and oil control for demanding industrial applications. We specialize in global B2B supply, serving major markets across North America, Europe, Asia-Pacific, and the Middle East with reliable shipping and export compliance.

Key Features & Benefits

• Premium Material Construction: Manufactured from high-grade alloy steel and coated for superior wear resistance and reduced friction.
• Precision Engineering: Ensures exact fitment and consistent cylinder sealing for restored engine power and efficiency.
• Enhanced Durability: Designed to withstand high-temperature and high-pressure environments common in excavator operation, extending engine service life.
• Optimal Oil Control: Prevents excessive oil consumption and reduces harmful emissions, promoting cleaner and more economical engine performance.
• Complete Set Solution: Includes all necessary rings for a full piston overhaul, simplifying procurement and ensuring component compatibility.

Technical Specifications

OEM Cross-Reference

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

• YDH20102ZY (Primary Part Number)

Note: Always verify part number compatibility with your specific engine serial number before purchase. Cross-reference data is based on standard configurations.

Compatibility

This piston ring set is designed for Komatsu excavator engines and is confirmed to fit the following applications:

• Engine Models: Komatsu J05E-TI, J08E-TI engine families.
• Machine Models: Komatsu SK300-8 and SK350-8 hydraulic excavators.
• Typical Model Years: Applicable to SK300-8 and SK350-8 series machines from their respective production launches.

Global Supply & Distribution

We are a trusted partner for heavy equipment parts distributors and repair workshops worldwide. Our logistics network ensures efficient delivery to key industrial hubs and ports.

• Worldwide Shipping: We export to all major continents via air and sea freight.
• Key Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East, and South America.
• Fast Delivery: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, and Jebel Ali for rapid regional distribution.
• Export Expertise: All documentation (Commercial Invoice, Packing List, Certificate of Origin) is provided for smooth customs clearance in compliance with international trade regulations.

Quality Assurance

Every component meets stringent quality standards to ensure performance and reliability.

• Manufacturing Standards: Produced in ISO-certified facilities using precision machining and quality-controlled materials.
• Rigorous Testing: Components undergo dimensional checks, material hardness testing, and visual inspections to guarantee they meet or exceed original specifications.
• Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms and conditions applicable to your region.

FAQ

Q1: How do I confirm this piston ring set fits my specific Komatsu engine?
A1: The most reliable method is to match the part number YDH20102ZY with your engine’s service parts catalog. We also recommend verifying your engine model (J05E or J08E) and the machine model (SK300-8/SK350-8). Providing your engine serial number to our technical team can ensure 100% fitment confirmation.

Q2: What is included in this “set,” and is it suitable for a complete engine rebuild?
A2: This is a complete piston ring set for one cylinder. For a multi-cylinder engine rebuild, you will need one set per cylinder. The set includes the necessary compression rings and oil control rings required to refurbish a single piston. It is a critical component for an overhaul but must be paired with other kits (like piston, liner, bearing sets) for a full rebuild.

Q3: Do you provide technical support for installation and troubleshooting?
A3: Yes, we provide basic technical data and installation guidelines for B2B partners. For complex troubleshooting, we recommend consulting the official Komatsu service manual or a certified heavy equipment mechanic to ensure proper installation torque, ring end-gap spacing, and cylinder wall preparation.

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 .