Product Overview

We supply premium quality, genuine ISUZU engine piston ring sets designed for heavy-duty industrial applications. As a trusted global supplier of OEM-compatible engine components, we serve major markets worldwide, including North America, Europe, the Asia-Pacific region, and the Middle East, ensuring reliable performance for your construction and excavation machinery.

Key Features & Benefits

• OEM Quality: Manufactured to original ISUZU specifications for precise fitment, optimal compression, and oil control.
• Enhanced Durability: Constructed from high-grade materials to withstand extreme pressures and temperatures within the 6SD1T engine cylinder.
• Optimal Engine Performance: Ensures proper sealing to maintain engine power, fuel efficiency, and reduce harmful blow-by gases.
• Extended Service Life: Reduces oil consumption and minimizes cylinder wear, contributing to longer intervals between overhauls.
• Complete Set: Includes all necessary rings per cylinder for a full engine overhaul, ensuring consistent quality across all pistons.

Technical Specifications

OEM Cross-Reference

Primary OEM Part Number: 1-12121137-1

This genuine ISUZU part is the direct replacement for the original component. Always verify the part number stamped on your old rings or consult your engine manual for confirmation.

Compatibility

This piston ring set is specifically engineered for the ISUZU 6SD1T turbocharged diesel engine. Its primary application is for the Hitachi EX300-5 hydraulic excavator. It is compatible with all production years of the EX300-5 model utilizing the 6SD1T power plant. For other machinery models equipped with the 6SD1T engine, please confirm machine model compatibility prior to ordering.

Global Supply & Distribution

We specialize in international B2B logistics for automotive and heavy machinery parts. Our streamlined export process ensures fast and reliable shipping to major industrial hubs and ports across the globe, including Rotterdam, Los Angeles, Singapore, Dubai, and Hamburg. We have extensive experience with international trade compliance, customs documentation, and Incoterms, facilitating smooth delivery to your warehouse or job site.

Quality Assurance

Every piston ring set is sourced to meet strict OEM engineering standards. Components undergo rigorous quality checks for dimensional accuracy, material integrity, and surface finish. We stand behind our parts with a comprehensive warranty and provide full technical support to ensure your satisfaction and successful installation.

FAQ

Q: How do I confirm this is the correct piston ring set for my Hitachi EX300-5 excavator?
A: The surest method is to cross-reference the part number. This set corresponds to OEM number 1-12121137-1. We recommend checking this number against your engine’s service manual or the markings on your existing piston rings during disassembly.

Q: What is included in one set, and how many sets are required for a full engine rebuild?
A: One set contains the piston rings for a single cylinder. Since the ISUZU 6SD1T engine is a 6-cylinder engine, you will need six (6) sets for a complete engine overhaul.

Q: Are there specific installation procedures or break-in recommendations for these rings?
A: Yes. Proper cylinder honing, precise ring end-gap measurement, and correct ring orientation are critical. Following installation, a proper engine break-in procedure—typically involving varying loads and RPMs—is essential to seat the rings correctly for optimal long-term performance and oil control.

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 .