Product Overview

This high-performance diesel engine piston is engineered for Komatsu S6D series engines, commonly found in excavators and heavy-duty construction machinery. We specialize in the global supply of genuine-quality engine components, serving major industrial 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 aluminum alloy for optimal strength-to-weight ratio, reducing inertial forces and improving engine response.
• Precision Engineering: CNC-machined to exact OEM tolerances ensuring perfect fitment, compression, and oil control for S6D series engines.
• Enhanced Durability: Features advanced skirt coating and ring groove hardening to withstand high combustion pressures and reduce wear in demanding excavator applications.
• Optimized Thermal Management: Designed cooling gallery and efficient piston crown shape promote even heat distribution, preventing hotspots and extending component life.
• Direct OEM Replacement: Guaranteed compatibility and performance as a direct substitute for original Komatsu parts, minimizing downtime.

Technical Specifications

OEM Cross-Reference

This piston is a direct cross-reference for the following OEM and alternative part numbers:

• Komatsu: 6209-31-2108
• Komatsu: 6574-31-2111
• Komatsu: 6137-32-2110

Compatibility

Engine Models: This piston is specifically designed for the Komatsu S6D series of 6-cylinder diesel engines, including models S6D95, S6D102, S6D105, and S6D107.

Vehicle/Equipment Applications: Primarily used in Komatsu hydraulic excavators (e.g., PC200, PC220, PC300, PC400 series) and other heavy machinery powered by the S6D engine platform. Please verify your engine serial number for exact fitment.

Global Supply & Distribution

We are a leading B2B supplier with extensive export experience to key industrial regions worldwide. Our logistics network ensures efficient shipping to major ports and industrial hubs in:

• North America: USA (Los Angeles, Houston, Savannah), Canada (Vancouver, Toronto)
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Shanghai, Busan, Sydney
• Middle East & Africa: Dubai, Jebel Ali, Durban

All shipments comply with international trade regulations and are supported by comprehensive commercial documentation (CI, PL, COO). We offer flexible Incoterms (FOB, CIF, DAP) to suit your supply chain needs.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities using strict quality control protocols that meet or exceed OEM specifications.
• Rigorous Testing: Each piston undergoes dimensional inspection, hardness testing, and visual quality checks to ensure performance and reliability.
• Warranty: Backed by a standard 12-month warranty against manufacturing defects from the date of purchase, providing peace of mind for your operations.

FAQ

Q: How do I confirm this piston fits my specific Komatsu S6D engine?
A: The most reliable method is to cross-reference your engine’s serial number (ESN) and the existing part number on your current piston. This part is designed for the S6D95, S6D102, S6D105, and S6D107 engine families. Please contact our technical support with your equipment model and ESN for verification.

Q: Is this piston sold as a single unit or as a set for one engine?
A> This listing is for a single piston assembly. For a complete engine overhaul, six (6) pistons are required for the inline 6-cylinder S6D engine. We offer volume discounts for set purchases; please inquire for a quotation.

Q: What is included with the piston, and what else do I need for a rebuild?
A> This is a complete piston assembly, which typically includes the piston body, piston pin, and circlips. For a proper rebuild, you will also need matching piston rings, cylinder liners, and connecting rod bearings. We supply all necessary components—ask about our complete engine overhaul kits.

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 .