
Product Overview
This is a high-quality replacement piston engineered for Komatsu 4D95 and 6D95 series diesel engines. Designed for durability and performance, it is an essential component for maintaining the power and efficiency of Komatsu construction and material handling equipment. We supply this part globally, with extensive experience serving major industrial markets across North America, Europe, Asia-Pacific, and the Middle East.
Key Features & Benefits
- Premium Material: Manufactured from high-grade aluminum alloy for optimal strength-to-weight ratio and thermal conductivity.
- Precision Engineering: CNC-machined to exact OEM specifications, ensuring perfect fitment and smooth operation within the cylinder.
- Enhanced Durability: Features advanced skirt coating and robust ring grooves to reduce friction and withstand high combustion pressures.
- Optimal Performance: Designed to restore engine compression, power output, and fuel efficiency to factory levels.
- Direct Replacement: A direct-fit component that eliminates compatibility concerns and simplifies the engine rebuild process.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6204-31-2110 |
| Engine Model | Komatsu 4D95, 6D95 |
| Primary Application | Komatsu PC110-7, PC130-7 Excavators; Komatsu Forklifts |
| Component Type | Piston (Complete with pin boss) |
| Material | High-Strength Aluminum Alloy |
| Condition | New, Aftermarket (OEM Quality) |
OEM Cross-Reference
This part is a direct replacement for the following OEM part numbers:
- Komatsu: 6204-31-2110
Always verify the part number from your original component or equipment manual before ordering.
Compatibility
This piston is compatible with the following equipment powered by Komatsu 4D95 and 6D95 diesel engines:
- Excavators: Komatsu PC110-7, PC130-7
- Forklifts: Various Komatsu forklift models
- Other Machinery: Applicable to other Komatsu equipment utilizing the 4D95/6D95 engine platform.
Note: Compatibility is engine-model specific. Verify your engine serial number for confirmation.
Global Supply & Distribution
We are a trusted global supplier of heavy-duty engine components. Our logistics network ensures reliable delivery to key industrial regions worldwide.
- Worldwide Shipping: We export to all major markets, including North America (USA, Canada, Mexico), the European Union, the United Kingdom, Australia, the Middle East, and Southeast Asia.
- Efficient Logistics: Fast container and air freight services to major ports and industrial hubs such as Rotterdam, Los Angeles, Singapore, and Dubai.
- Trade Compliance: All shipments are accompanied by complete commercial documentation (Invoice, Packing List, Certificate of Origin) for smooth customs clearance.
- B2B Focus: We specialize in bulk orders for workshops, distributors, and fleet operators, offering competitive FOB/CIF terms.
Quality Assurance
Every component meets stringent quality standards to ensure reliability in demanding applications.
- Manufacturing Standards: Produced in ISO-certified facilities using advanced metallurgy and precision machining.
- Rigorous Testing: Each piston undergoes dimensional inspection, hardness testing, and visual quality checks.
- Warranty: Backed by a standard warranty against manufacturing defects. Contact us for specific warranty terms.
FAQ
Q1: Is this piston sold as a single unit or as a set for the entire engine?
A1: This listing is for a single piston. For a complete engine set, please contact our sales team to discuss your cylinder count requirements (e.g., 4 for a 4D95, 6 for a 6D95).
Q2: Do I need to purchase piston rings separately?
A2: Yes, this listing is for the piston assembly (including the wrist pin bosses). Piston rings, wrist pins, and connecting rods are typically sold separately. We offer full engine overhaul kits—inquire for a comprehensive parts package.
Q3: What is the recommended installation procedure?
A3: For optimal performance and engine longevity, we recommend: 1) Always replace pistons and rings as a full set per engine. 2) Have the cylinder liners/hones professionally measured and machined if necessary. 3) Use proper engine assembly lubricants. 4) Follow the OEM service manual for torque specifications and break-in procedures. Consulting a certified mechanic is advised.
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 .