Product Overview

This high-performance replacement piston is engineered for Komatsu industrial engines, offering a reliable solution for heavy-duty equipment repair and overhaul. We supply this critical engine component globally, with extensive experience serving major markets across North America, Europe, Asia-Pacific, and the Middle East. Our commitment is to provide OEM-quality parts that ensure optimal engine performance and longevity.

Key Features & Benefits

• Premium Aluminum Alloy Construction: Manufactured from high-grade aluminum alloy for an optimal balance of strength, durability, and heat dissipation, reducing the risk of thermal fatigue and cracking.
• Precision Engineering: Designed to exact OEM specifications, ensuring perfect fitment, correct compression ratios, and smooth operation within the cylinder bore.
• Enhanced Combustion Efficiency: The precisely machined combustion chamber and crown design promote efficient fuel-air mixing and complete combustion, contributing to engine power and fuel economy.
• Extended Service Life: Built to withstand the high-pressure and high-temperature environment of diesel combustion, providing reliable service and reducing downtime for your equipment.
• Global Logistics Support: Available for fast shipping to major industrial hubs and ports worldwide, ensuring you receive the parts you need without unnecessary delays.

Technical Specifications

OEM Cross-Reference

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

• Komatsu: 6151-32-2110

Always verify the part number from your original component or engine serial number plate before ordering to ensure correct compatibility.

Compatibility

This piston is designed for Komatsu industrial diesel engines. Primary applications include:

• Engine Models: Komatsu 6D125, S6D125E-2
• Equipment Application: Komatsu Crane Model LW250-5, and other machinery utilizing the specified engine series.
• For precise fitment, we recommend confirming the engine serial number and existing part number, as specifications can vary across production years.

Global Supply & Distribution

We are a trusted supplier in the global heavy equipment aftermarket. Our network ensures efficient delivery to key industrial regions:

• Worldwide Shipping: We export to all major continents via air and sea freight.
• Major Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, the Middle East, and South America.
• Fast Delivery: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, and Jebel Ali, with reliable inland forwarding options.
• Export Compliance: All shipments are prepared with professional commercial invoices, packing lists, and comply with international trade regulations for a smooth customs clearance process.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities using advanced CNC machining and metallurgical processes to meet or exceed original performance specifications.
• Rigorous Testing: Each batch undergoes dimensional inspection, material hardness testing, and visual quality control to ensure integrity.
• Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms and conditions applicable to your region.

FAQ

Q1: Is this piston sold as a single unit or as a set?
A1: This listing is typically for a single piston. For a complete engine overhaul, a full set matching the number of cylinders in your engine (6 for the 6D125) is required. Please inquire for set pricing and availability.

Q2: Do I need to hone my cylinder liner or replace piston rings when installing this new piston?
A2: Yes, for optimal performance and engine life, it is a standard best practice to inspect and hone the cylinder liner to achieve the correct surface finish and cross-hatch pattern. We strongly recommend installing new, matching piston rings and inspecting the wrist pin and connecting rod bearing during assembly.

Q3: Can you provide the specific installation torque for the piston pin?
A3: While we supply the component, final installation torque values and procedures are critical and must be obtained from the official Komatsu service manual for your specific engine serial number. Using incorrect torque can lead to severe engine damage. We recommend consulting a certified technician for installation.

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 .