Product Details

Product Overview

This premium Doosan De12 Cylinder Piston (Part Number: 65.02501-0209) is a critical engine component designed for high-performance excavator applications. Manufactured to meet or exceed OEM specifications, this piston ensures optimal combustion, reduced friction, and extended engine life. Our global supply chain guarantees fast delivery to major markets including North America, Europe, Asia-Pacific, the Middle East, and Africa, making us a trusted partner for construction and mining industries worldwide.

Key Features & Benefits

• OEM Quality Assurance: Precision-engineered to match original Doosan specifications for perfect fitment and performance.
• Enhanced Durability: Constructed from high-grade aluminum alloy with reinforced ring grooves to withstand extreme temperatures and pressures.
• Improved Fuel Efficiency: Optimized piston design reduces blow-by and improves combustion efficiency, lowering operational costs.
• Rigorous Testing: Each piston undergoes strict quality control including dimensional inspection, material analysis, and pressure testing.
• Long Service Life: Advanced surface treatment reduces wear and extends replacement intervals, minimizing downtime for your equipment.

Technical Specifications

OEM Cross-Reference

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

• Doosan: 65.02501-0209
• Alternative: 65.02501-0209A (where applicable)

Note: Always verify compatibility with your specific engine serial number before purchase.

Compatibility

Designed for use in the following equipment:

• Engine: Doosan De12 Series Diesel Engine
• Applications: Excavators (e.g., Doosan DX300, DX340, DX380 models), heavy construction machinery, and industrial generators.
• Year Range: Compatible with De12 engines manufactured from 2005 onwards.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable logistics to over 50 countries, including the USA, Canada, Germany, UAE, Australia, and Singapore.
• Major Markets Served: North America, Europe, Asia-Pacific, Middle East, Africa, and South America.
• Fast Delivery: Stock available for immediate dispatch from our warehouses in China and regional hubs. Typical delivery to major ports (e.g., Rotterdam, Los Angeles, Dubai) within 5-10 business days via air or sea freight.
• Export Compliance: All products are packaged and documented per international trade standards (ISPM 15 for wooden packaging, commercial invoices, and certificates of origin).

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001:2015 certified facilities, ensuring consistent quality control.
• Warranty: 12-month warranty against manufacturing defects from the date of shipment.
• Testing Procedures: Each piston is subjected to dimensional inspection, material hardness testing, and leak-down pressure tests to guarantee reliability under load.

FAQ

Q1: Is the 65.02501-0209 piston compatible with any Doosan De12 engine variant?
A1: This piston is designed for standard De12 engines used in Doosan excavators. However, minor variations may exist in later models. We recommend checking your engine serial number and confirming the piston diameter (typically 128mm) with our technical team for full assurance.

Q2: Can I install this piston without replacing the piston rings and cylinder liner?
A2: For optimal performance and to prevent premature wear, it is strongly advised to replace the piston rings and inspect the cylinder liner when installing a new piston. Using a new piston with worn rings or a scored liner can lead to poor compression and oil consumption.

Q3: What maintenance schedule is recommended for De12 pistons?
A3: Under normal operating conditions (e.g., 8-10 hours/day in construction), piston inspection is recommended every 6,000-8,000 hours. Replacement should occur if there is visible scoring, cracking, or if the ring groove wear exceeds 0.10mm. Always follow the Doosan service manual for your specific model.

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 .