Product Overview

This high-performance Diesel Fuel Injector Nozzle DN4PD57 (093400-5571) is an essential replacement component for modern Common Rail diesel injection systems. Manufactured to meet stringent OE specifications, this nozzle ensures precise fuel atomization, optimal combustion efficiency, and reduced emissions. We are a leading global supplier of diesel engine parts, serving markets across North America, Europe, Asia-Pacific, the Middle East, and South America. With a robust supply chain and extensive export experience, we guarantee fast and reliable shipping to industrial hubs worldwide.

Key Features & Benefits

• Precision Engineering: Crafted from high-speed steel for exceptional durability and resistance to wear and corrosion.
• Optimized Fuel Atomization: Delivers a fine, consistent fuel spray pattern for improved combustion, resulting in increased power output and lower fuel consumption.
• 100% Professional Testing: Each nozzle undergoes rigorous flow rate and spray pattern testing to guarantee perfect performance and reliability out of the box.
• Direct OE Replacement: Designed to be a direct, plug-and-play replacement for the original part, ensuring a seamless installation process.
• Reduced Emissions: Contributes to cleaner engine operation by promoting complete fuel combustion, helping to meet environmental standards.

Technical Specifications

OEM Cross-Reference

This injector nozzle is a direct replacement for the following OEM and reference numbers:

• OEM Number: 093400-5571
• Part Number: DN4PD57
• Alternative Numbers: Please verify compatibility with your specific engine model as this part is commonly used across various applications.

Compatibility

This fuel injector nozzle is designed for use in a wide range of diesel engines equipped with Common Rail fuel injection systems. While primarily designed for universal diesel car applications, it is commonly found in:

• Engine Types: Common Rail Diesel Engines (e.g., Bosch, DENSO, Delphi systems).
• Vehicle Applications: Passenger cars, light commercial vehicles, and industrial equipment using compatible injector bodies.
• Note: Always verify the specific injector body assembly and engine code for 100% fitment before purchase.

Global Supply & Distribution

We operate a global distribution network designed to serve B2B clients with speed and efficiency:

• Worldwide Shipping: We ship to all major continents including North America, Europe, Asia, Africa, and Oceania.
• Major Markets: Our parts are exported to industrial centers in the USA, Germany, UK, UAE, Australia, and Singapore.
• Fast Delivery: Orders are processed within 24 hours. Standard delivery time is 3-7 business days via express courier (DHL, FedEx, UPS) or air freight.
• Trade Compliance: We have extensive experience in international trade documentation and customs clearance to ensure smooth delivery to your port or warehouse.

Quality Assurance

We are committed to providing parts that meet or exceed OE standards. Our quality assurance process includes:

• Manufacturing Standards: Produced in ISO-certified facilities using advanced machining processes.
• Testing: Each nozzle is 100% professionally tested for flow rate, spray pattern, and sealing performance.
• Warranty: All parts are backed by a robust 6-month warranty against manufacturing defects.
• Material Integrity: Use of high-speed steel ensures long service life and resistance to the extreme pressures of Common Rail systems.

FAQ

Q1: How do I know if this nozzle (DN4PD57) fits my injector?

A: This nozzle is a standard size for many Common Rail injectors. To confirm fitment, check the existing part number on your old nozzle. It should match the OEM number 093400-5571 or the part number DN4PD57. You should also verify the injector body model and engine code. If you are unsure, please contact us with your vehicle VIN or injector details for professional verification.

Q2: What is the recommended installation procedure for this nozzle?

A: Installation should be performed by a qualified diesel technician. Critical steps include: 1) Thoroughly cleaning the injector body bore. 2) Lubricating the new nozzle with clean diesel fuel before insertion. 3) Tightening the retaining nut to the manufacturer’s specified torque to avoid distortion. 4) After installation, the injector should be bench-tested to ensure proper opening pressure and spray pattern.

Q3: Can I replace just the nozzle, or do I need a complete injector?

A: While it is possible to replace only the nozzle tip, it is highly recommended to replace the entire injector assembly if the injector has high mileage or if the nozzle needle and seat are severely worn. Replacing just the nozzle can be a cost-effective solution for minor performance issues, but for optimal reliability and performance, a complete injector rebuild or replacement is often advised.