Doosan D34/D34F Engine Piston with Pin 7256840 7256841 – Heavy Equipment Diesel Engine Parts

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.