Product Overview

Engineered for high-performance diesel fuel injection systems, the DLLA158SN638 Injector Nozzle is a premium replacement component designed to meet the rigorous demands of heavy-duty excavator and industrial engine applications. As a critical component in the combustion process, this nozzle ensures precise fuel atomization, optimal spray patterns, and efficient fuel delivery, resulting in improved engine performance and reduced emissions.

We supply this high-precision fuel injection nozzle to distributors, repair workshops, and fleet operators across North America, Europe, the Middle East, Southeast Asia, and South America. With robust global logistics and export expertise, we ensure fast delivery to major industrial hubs and ports worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and reliable performance.
• Superior Durability: Constructed from high-grade alloy steel with advanced heat treatment for extended service life in harsh environments.
• Optimized Fuel Atomization: Advanced nozzle design ensures fine fuel mist for complete combustion, improving fuel efficiency and power output.
• Emission Compliance: Helps maintain low exhaust emissions by ensuring precise fuel delivery.
• Cost-Effective Replacement: High-quality aftermarket alternative to expensive OEM dealer parts without compromising reliability.

Technical Specifications

OEM Cross-Reference

This injector nozzle is designed to replace the following OEM and alternative part numbers. Please verify your specific engine model before ordering.

• Primary OEM Number: 105015-6380
• Alternative OEM Number: 9432610073
• Nozzle Model: DLLA158SN638

These numbers are often found stamped on the original injector body or nozzle holder. Cross-reference these numbers to ensure compatibility with your fuel injection system.

Compatibility

This nozzle is compatible with a range of diesel engines commonly found in construction machinery and industrial applications. It is typically used in fuel injectors for:

• Excavators: Various models from major manufacturers including Komatsu, Caterpillar, Hitachi, and Kobelco (dependent on engine series).
• Industrial Engines: Used in generator sets, marine engines, and agricultural machinery where the specified injector body is utilized.
• Engine Models: Commonly associated with diesel engines requiring the DLLA158SN638 nozzle type (e.g., certain Cummins, Komatsu, and Isuzu engine variants).

Note: Always confirm the part number on your existing injector nozzle or consult your engine service manual to ensure correct fitment.

Global Supply & Distribution

We understand the urgency of keeping heavy equipment operational. Our global supply chain is optimized for speed and reliability.

• Worldwide Shipping: We ship to over 100 countries via express air freight (DHL, FedEx, UPS) and sea freight for bulk orders.
• Major Markets: Strong distribution networks in North America (USA, Canada), Europe (Germany, UK, France), Asia-Pacific (Australia, Indonesia, India), the Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Fast Delivery: Quick dispatch from our warehouse to major ports and industrial centers. Express delivery typically takes 3-7 business days to most major cities.
• Export Compliance: All shipments are handled with full export documentation and international trade compliance for a smooth customs clearance process.

Quality Assurance

Our fuel injection nozzles are manufactured in ISO 9001:2015 certified facilities, ensuring consistent quality and performance.

• Manufacturing Standards: Produced using advanced CNC machining and precision grinding to achieve sub-micron tolerances.
• Testing Procedures: Each batch undergoes rigorous testing for:
  • Spray pattern and atomization quality
  • Flow rate consistency
  • Sealing integrity under high pressure
  • Durability and wear resistance
• Warranty: Backed by a 6-month warranty against manufacturing defects. We offer replacement or refund for any verified quality issues.

FAQ

Q1: How do I verify if this nozzle fits my engine?
A: The most reliable method is to remove your current injector nozzle and check for the stamped number DLLA158SN638 or the OEM numbers 105015-6380 / 9432610073. You can also consult your engine’s service manual or provide us with your engine serial number for verification.

Q2: What are the signs that my injector nozzle needs replacement?
A: Common symptoms include rough idling, excessive black or white smoke, decreased fuel efficiency, loss of engine power, and hard starting. If you notice these signs, a nozzle replacement is often required to restore performance.

Q3: What maintenance is required for diesel injector nozzles?
A: To ensure longevity, always use clean, high-quality diesel fuel and replace fuel filters regularly. Avoid running the engine with contaminated fuel. It is recommended to have the injectors tested and calibrated by a professional diesel shop every 2,000-3,000 operating hours.