Product Overview

This is a premium-quality piston ring set engineered for Komatsu 4D92 diesel engines. Designed to meet or exceed OEM specifications, this component is essential for restoring engine compression, controlling oil consumption, and ensuring optimal performance in heavy-duty machinery. We supply this critical spare part to a global network of distributors, workshops, and fleet operators, with major markets across North America, Europe, the Middle East, and the Asia-Pacific region.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions (OEM Size) for a perfect fit and seamless installation, ensuring proper cylinder sealing and compression.
• Enhanced Durability: Made from high-grade materials to withstand the high temperatures and pressures within a diesel combustion chamber, promoting long service life and reliability.
• Optimal Performance: Restores engine power and efficiency by minimizing blow-by, reducing oil consumption, and maintaining proper cylinder wall lubrication.
• Rigorous Quality Control: Each set undergoes stringent inspection processes, supported by machinery test reports and video outgoing-inspection documentation for your assurance.
• Global Compliance Ready: Packaged for international shipping and trade, ensuring smooth logistics to your destination port or warehouse.

Technical Specifications

OEM Cross-Reference

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

• Komatsu: 6141-31-2020
• Komatsu: 6140-31-2040

Always verify the part number from your original engine or service manual before ordering to ensure correct compatibility.

Compatibility

This piston ring set is specifically designed for the Komatsu 4D92 series diesel engine. This engine is commonly found in a wide range of Komatsu heavy machinery and industrial vehicles, including but not limited to:

• Forklifts
• Excavators
• Trucks
• Loaders
• Bulldozers
• Buses & Coaches
• Other industrial and construction equipment powered by the 4D92 engine.

Global Supply & Distribution

We are a professional exporter of heavy-duty engine components with extensive experience in international B2B trade. Our logistics network ensures reliable and cost-effective shipping to major industrial hubs worldwide.

• Worldwide Shipping: We export to all major markets, including North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands, Poland), the Middle East (UAE, Saudi Arabia), Asia-Pacific (Australia, Singapore, Japan), and South America.
• Fast Delivery: Efficient shipping arrangements to key ports such as Los Angeles, Rotterdam, Hamburg, Jebel Ali, Singapore, and Sydney.
• Export Expertise: All documentation (Commercial Invoice, Packing List, Certificate of Origin) is provided professionally, ensuring smooth customs clearance.
• Bulk & Wholesale: We cater to distributors and large-scale buyers with competitive pricing for container (FCL) and pallet (LCL) orders.

Quality Assurance

Our commitment to quality ensures you receive a reliable part that performs under demanding conditions.

• Manufacturing Standards: Produced in ISO-certified facilities using precision tooling and high-quality materials.
• Comprehensive Warranty: Backed by a 6-month warranty against manufacturing defects from the date of purchase.
• Testing & Inspection: Every batch is subject to dimensional checks and material analysis. A machinery test report is available upon request, and our production process includes video outgoing-inspection for added transparency.

FAQ

Q: How can I confirm this piston ring set will fit my specific Komatsu 4D92 engine?
A: The most reliable method is to cross-reference the part number stamped on your original piston rings or listed in your engine’s official service manual with our listed OEM numbers (6141-31-2020, 6140-31-2040). You can also provide your engine’s full model and serial number for our technical team to verify.

Q: What is included in the packaging, and is installation guidance provided?
A: The product is sold as a complete piston ring set for one cylinder, packaged securely in a plastic bag inside a box for protection. While detailed installation instructions are not included, we recommend the procedure outlined in the Komatsu 4D92 service manual, which covers proper ring gap measurement, orientation, and installation techniques critical for engine longevity.

Q: Do you provide technical support or documentation for customs and import procedures?
A> Yes. We provide all necessary export documentation, including a detailed Commercial Invoice and Packing List with accurate HS codes. For specific regulatory requirements in your country (e.g., CE marking, emissions compliance documents), please contact our sales team prior to ordering so we can advise on the available certifications for this part.

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 .