Product Details

Product Overview

This high-quality piston assembly, complete with piston pin, is specifically engineered for the Doosan D34 and D34F diesel engines. Designed for heavy-duty applications in construction and industrial machinery, this component ensures reliable performance and long service life. We supply this critical engine part globally to markets in North America, Europe, Asia-Pacific, the Middle East, and South America, supporting major ports and industrial hubs with fast, reliable shipping.

Key Features & Benefits

• Precision Engineering: Manufactured to OEM specifications for a perfect fit and direct replacement, eliminating the need for modifications.
• Superior Durability: Constructed from high-strength alloy materials to withstand extreme combustion pressures and temperatures, reducing wear and extending engine life.
• Enhanced Performance: Optimized ring groove design and pin bore geometry improve compression sealing and reduce friction, leading to better fuel efficiency and power output.
• Rigorous Quality Control: Each piston undergoes strict dimensional and material testing to ensure consistency and reliability.
• Complete Assembly: Supplied with a matched piston pin for convenience and guaranteed compatibility.

Technical Specifications

OEM Cross-Reference

This piston assembly is a direct replacement for the following OEM part numbers, ensuring compatibility with your existing engine components:

• Doosan: 7256840
• Doosan: 7256841

Compatibility

This piston assembly is specifically designed for use in the following engine models. Please verify your engine’s serial number and configuration to ensure correct fitment.

• Engine Models: Doosan D34, Doosan D34F
• Typical Applications: Excavators, wheel loaders, and other heavy construction machinery powered by these specific engines.

Global Supply & Distribution

We are a dedicated supplier of heavy-duty engine parts with a robust global logistics network. We offer:

• Worldwide Shipping: Reliable delivery to all major international destinations via air, sea, and express courier.
• Key Markets: Serving North America, Europe, Southeast Asia, the Middle East, Africa, and South America.
• Fast Delivery: Stock available for immediate dispatch from our strategically located warehouses to major ports like Rotterdam, Shanghai, Houston, and Jebel Ali.
• Trade Compliance: Experienced in international trade documentation and customs clearance to ensure a smooth transaction for our B2B partners.

Quality Assurance

We are committed to providing parts that meet or exceed industry standards.

• Manufacturing Standards: Produced in ISO 9001 certified facilities.
• Testing: Each batch is tested for dimensional accuracy, material hardness, and structural integrity.
• Warranty: We offer a standard 12-month warranty against manufacturing defects from the date of purchase.

FAQ

1. Will this piston fit my Doosan D34 engine if the engine serial number is different?
While this piston assembly is designed for the D34 and D34F model families, engine specifications can vary slightly by serial number range. We strongly recommend comparing the original part number (7256840 or 7256841) with your current piston. If you are unsure, please contact our technical support team with your engine model and serial number for confirmation before purchasing.

2. Is the piston pin included, and is it pre-lubricated for installation?
Yes, the piston pin is included with this assembly. The pin and piston bore are manufactured to tight tolerances. We recommend applying a light coat of clean engine oil to the pin and connecting rod bushing during installation to ensure proper initial lubrication and prevent scoring.

3. What is the recommended installation procedure for this piston?
Professional installation by a qualified diesel mechanic is highly recommended. Key steps include carefully cleaning the cylinder bore, installing new piston rings using a ring compressor, and ensuring the arrow on the piston crown is oriented correctly towards the front of the engine. Always follow the manufacturer’s service manual for your specific engine model for torque specifications and procedures.

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 .