Product Overview

This professional-grade Fuel Injector Nozzle, model DN0SD311 (OEM 0434250896), is designed for precision fuel delivery in diesel engines. Manufactured to exacting standards in Shandong, China, this high-quality replacement part ensures optimal engine performance and fuel efficiency. We serve a global B2B clientele, with major markets across North America, Europe, Asia-Pacific, and the Middle East, ensuring reliable supply for workshops, distributors, and fleet operators worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured with high-grade materials to ensure accurate fuel atomization and consistent injection pressure, leading to improved combustion efficiency.
• Enhanced Durability: Built to withstand extreme operating conditions, offering a long service life and resistance to wear and corrosion from diesel fuel.
• Direct OE Replacement: Replaces OEM part number DN0SD311 and 0434250896, ensuring a perfect fit without modifications, reducing installation time.
• Performance Improvement: Helps restore lost engine power, reduce black smoke emissions, and improve fuel economy by ensuring the injector delivers the correct spray pattern.
• Rigorous Testing: Each nozzle undergoes strict quality control checks for spray pattern, opening pressure, and leakage to guarantee reliable operation from the first start.

Technical Specifications

OEM Cross-Reference

This fuel injector nozzle is a direct replacement for the following OEM part numbers:

• DN0SD311 (Primary OEM Number)
• 0434250896 (Bosch-Style Reference)
• SD311 (Alternative Number)

Compatibility

This nozzle is designed for use in a variety of diesel fuel injection systems. While specific vehicle applications can vary, it is commonly compatible with:

• Engine Types: General diesel engines requiring a standard-size injector nozzle (car engine application).
• Vehicle Models: Compatible with various makes and models (listed as “other”) utilizing the DN0SD311 / 0434250896 nozzle specification.
• System: Suitable for both mechanical and early electronic diesel injection pumps.

Note: Please verify your existing nozzle part number to ensure compatibility before purchase.

Global Supply & Distribution

As a dedicated B2B supplier, we offer comprehensive global logistics solutions to meet your procurement needs:

• Worldwide Shipping: We ship to all major continents including North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.
• Fast Delivery: Orders are processed within 3-7 days and shipped via trusted carriers like DHL, FedEx, EMS, TNT, and UPS.
• Flexible Packaging: We accommodate customer-specific packaging requests to ensure safe transit and efficient warehousing.
• Export Experience: Our team has extensive experience in international trade, ensuring smooth customs clearance and compliance with export regulations.

Quality Assurance

We are committed to delivering products that meet the highest standards of quality and reliability:

• Manufacturing Standards: Produced in a certified facility in Shandong, China, with strict quality control processes.
• Testing: Each nozzle is tested for spray pattern, opening pressure, and sealing integrity to ensure optimal performance.
• Warranty: Backed by a 6-month warranty against manufacturing defects, giving you confidence in your purchase.
• Customer Service: Our 24-hour customer service team is available to assist with any inquiries or issues.

FAQ

Q: How do I know if this nozzle (DN0SD311) fits my engine?

A: Fitment is determined by the nozzle’s physical dimensions and spray characteristics. Please check your existing injector nozzle for the part number stamped on its side. If it matches DN0SD311, SD311, or 0434250896, this part is a direct replacement. If you are unsure, please contact us with your engine model or injector pump code for verification.

Q: Do I need to replace all injector nozzles at the same time?

A: Yes, it is highly recommended to replace all injector nozzles in a set (e.g., all 4, 6, or 8) to ensure uniform fuel delivery across all cylinders. Replacing a single nozzle can lead to uneven engine performance, vibration, and increased emissions. Our MOQ of 24 pieces is ideal for stocking multiple service kits.

Q: What is the recommended installation procedure?

A: Installation should be performed by a qualified diesel technician. Key steps include cleaning the injector bore, lubricating the nozzle with clean diesel oil, and tightening to the manufacturer’s specified torque. It is critical to avoid cross-threading and to ensure the copper washer (if applicable) is replaced. After installation, the injector opening pressure should be tested and adjusted on a pop tester to the engine’s specifications.