
Product Overview
This high-quality replacement piston is engineered for the Komatsu PC200-7 excavator, specifically designed for the Cummins 6BT and Komatsu 6D102 diesel engines. As a leading global supplier of heavy machinery rebuild parts, we ensure this component meets the rigorous demands of professional rebuilds and is available for fast shipping to major industrial markets worldwide, including North America, Europe, and the Asia-Pacific region.
Key Features & Benefits
- Premium Durability: Manufactured from high-grade aluminum alloy to withstand extreme combustion pressures and temperatures, ensuring long service life.
- Precision Engineering: Machined to exact OEM specifications for a perfect fit, guaranteeing optimal compression and engine performance.
- Enhanced Heat Dissipation: Optimized design promotes efficient heat transfer, reducing the risk of thermal stress and pre-ignition.
- Reduced Friction & Wear: Advanced skirt coating minimizes cylinder wall friction, contributing to improved fuel efficiency and lower oil consumption.
- Complete Rebuild Solution: An essential, reliable component for a full engine overhaul, restoring power and reliability to your Komatsu excavator.
Technical Specifications
| Specification | Detail |
|---|---|
| Primary Part Number | 3957795 |
| Alternative Part Number | 3908673 |
| Engine Model | Cummins 6BT, Komatsu 6D102 |
| Application | Komatsu PC200-7 Excavator |
| Piston Diameter | 102 mm |
| Material | High-Strength Aluminum Alloy |
| Type | Diesel Engine Piston Assembly |
OEM Cross-Reference
This piston directly replaces the following OEM part numbers:
- Komatsu: 3957795, 3908673
- Cummins: 3957795
It is a direct cross-reference for these numbers, ensuring compatibility and performance parity with the original component.
Compatibility
This piston is designed for the following specific applications:
- Engine Models: Cummins 6BT, Komatsu 6D102 diesel engines.
- Machine Application: Komatsu PC200-7 hydraulic excavator.
- Typical Model Years: Compatible with PC200-7 excavators produced during the standard production run of this series. Always verify your engine serial number for final confirmation.
Global Supply & Distribution
We specialize in the international distribution of critical engine components. Our logistics network ensures reliable delivery to key industrial and construction markets globally.
- Worldwide Shipping: Available via air and sea freight to all major continents.
- Key Markets Served: North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands), Asia-Pacific (Australia, Japan, Singapore), the Middle East (UAE, Saudi Arabia), and South America.
- Fast Delivery: Expedited shipping options to major ports and logistics hubs, including Rotterdam, Los Angeles, Singapore, and Jebel Ali.
- Export Compliance: All shipments are prepared with complete commercial invoices, packing lists, and comply with international trade regulations for a smooth customs clearance process.
Quality Assurance
Every piston is subject to a stringent quality control process to guarantee performance and reliability for B2B clients and rebuild shops.
- Manufacturing Standards: Produced in ISO-certified facilities using precision CNC machinery.
- Material Certification: Raw materials are sourced from certified suppliers, with traceability and material test reports available upon request.
- Rigorous Testing: Components undergo dimensional inspection, hardness testing, and visual quality checks to ensure they meet or exceed original specifications.
- Warranty: Backed by a standard 12-month warranty against manufacturing defects, providing confidence in your purchase.
FAQ
Q: Is this piston sold as a single unit or as a full set for the engine?
A: This listing is for a single piston. A complete set for the 6-cylinder 6BT/6D102 engine would require six (6) units. Please adjust your order quantity accordingly for a full rebuild.
Q: Do I need to purchase piston rings separately?
A: Yes, this listing is for the piston assembly itself. Piston rings, wrist pins, and connecting rods are typically sold as separate components. We offer compatible ring sets—please inquire for the correct part number.
Q: What are the critical installation checks for this piston?
A: Prior to installation, always: 1) Measure the new piston diameter and the cylinder bore to verify clearance specifications. 2) Ensure the ring groove dimensions match your new piston rings. 3) Confirm the orientation (front marking) of the piston for correct installation in the cylinder. Proper cylinder honing and cleaning are essential for optimal performance and longevity.
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 .