Product Overview

This high-quality Diesel Fuel Injector Nozzle, featuring OEM numbers 0433171066 and DLLA31S921, is a precision replacement component designed for optimal fuel atomization in diesel engines. Manufactured in Shandong, China, this S-Type nozzle is engineered for direct replacement and repair applications. We offer global shipping, serving major markets including North America, Europe, Southeast Asia, the Middle East, and South America, ensuring fast delivery to industrial hubs and ports worldwide.

Key Features & Benefits

• Precision Engineering: Crafted from high-speed steel for exceptional durability and resistance to wear, ensuring a long service life under high-pressure conditions.
• Optimal Fuel Atomization: Designed to deliver a precise fuel spray pattern, promoting efficient combustion, reduced emissions, and improved engine performance.
• Direct Fit Replacement: Manufactured to meet or exceed OEM specifications for a seamless, plug-and-play installation on compatible diesel engines.
• Rigorous Quality Control: Each nozzle undergoes strict testing to guarantee reliable operation and consistent performance in demanding environments.
• Cost-Effective Solution: Provides a reliable alternative to expensive OEM parts without compromising on quality or functionality.

Technical Specifications

OEM Cross-Reference

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

• 0433171066
• DLLA31S921

Note: This part is designed for use in Bosch-style fuel injection systems. Please verify your existing part number for compatibility.

Compatibility

This injector nozzle is primarily designed for use in diesel engines found in heavy-duty trucks and commercial vehicles. While specific model fitment can vary, it is commonly used in applications requiring the DLLA31S921 specification.

• Vehicle Type: Diesel Engine Trucks
• Engine Application: Fuel Injection System

Global Supply & Distribution

We are a reliable supplier with extensive export experience, capable of fulfilling bulk and single-item orders for international B2B clients. Our logistics network ensures efficient delivery to:

• North America: Major ports and inland distribution centers.
• Europe: Key industrial hubs and logistics gateways.
• Asia-Pacific: Rapid delivery to regional markets.
• Middle East & Africa: Reliable shipping to major commercial ports.
• South America: Consistent supply chain solutions.

We offer flexible shipping options and can accommodate urgent orders to minimize downtime for your fleet or workshop.

Quality Assurance

• Manufacturing Standards: Produced in a facility that adheres to strict quality control processes.
• Warranty: Comes with a 4-month warranty against manufacturing defects.
• Testing: Each batch is tested for dimensional accuracy and spray pattern quality to ensure reliable performance.

FAQ

Q: How do I confirm this nozzle (DLLA31S921) fits my engine?
A: Please check your current nozzle for the part number stamped on the side. If it is 0433171066 or DLLA31S921, this is a direct replacement. For other applications, verify that the nozzle length, spray angle, and hole configuration match your engine’s specifications.

Q: What is the installation process for this injector nozzle?
A: Installation should be performed by a qualified diesel mechanic. It typically involves removing the old nozzle, cleaning the injector body, and carefully installing the new nozzle with the correct torque specifications. We recommend replacing the copper washer and using proper lubrication for a secure seal.

Q: How can I maintain the performance of this nozzle?
A: To ensure longevity, use clean, high-quality diesel fuel and replace your fuel filters regularly. If you experience rough idling, poor fuel economy, or excessive smoke, have the injectors inspected by a professional, as these can be signs of nozzle wear or blockage.