Product Overview

The DLLA154S334N419 Diesel Fuel Injector Nozzle (OEM Reference: 105015-4190) is a precision-engineered replacement component designed for diesel fuel injection systems used in excavators, construction machinery, and heavy-duty industrial engines. Manufactured to exacting tolerances, this nozzle tip delivers reliable atomization and consistent fuel delivery, helping restore engine efficiency and reduce exhaust emissions.

We supply this nozzle to engine rebuilders, diesel service centers, and parts distributors across North America, Europe, the Middle East, Southeast Asia, South America, and Africa. With established export channels and consolidated shipping to major industrial ports and logistics hubs, we support both single-unit orders and bulk wholesale procurement.

Key Features & Benefits

• Precision Atomization: Multi-hole nozzle design ensures fine fuel spray patterns for complete combustion and improved fuel economy.
• Hardened Alloy Construction: Nozzle body and needle manufactured from high-grade alloy steel with heat treatment for extended service life.
• OEM-Matched Tolerances: Direct replacement for 105015-4190, engineered to match original spray angle and flow characteristics.
• Corrosion & Wear Resistant: Surface treatment protects against diesel fuel contaminants and high-temperature operating conditions.
• Stable Performance: Maintains consistent injection pressure and spray pattern across the full engine load range.
• Cost-Effective Alternative: Delivers OEM-level reliability at a competitive aftermarket price point for fleet and repair operations.

Technical Specifications

OEM Cross-Reference

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

• 105015-4190 — Primary OEM Reference
• DLLA154S334N419 — Manufacturer Part Number
• DLLA 154 S 334 N 419 — Spaced Format Reference

Buyers are advised to verify the part number against their existing injector or engine documentation before ordering. Cross-reference lists are provided for guidance; always confirm compatibility with your specific engine configuration.

Compatibility

This injector nozzle is designed for diesel engines that utilize the DLLA154S334N419 / 105015-4190 nozzle specification. Typical applications include:

• Excavators and construction equipment with compatible diesel injection systems
• Heavy-duty industrial and stationary diesel engines
• Agricultural and material-handling machinery using matching injector assemblies

Note: Engine model and year compatibility varies by machine configuration. Please confirm your injector assembly number and engine model before purchase. Our technical team can assist with fitment verification upon request.

Global Supply & Distribution

We operate as an export-focused supplier of diesel engine components, serving B2B customers worldwide. Our distribution network supports:

• North America: Fast shipping to industrial centers and port cities across the US, Canada, and Mexico.
• Europe: Reliable delivery to Germany, UK, France, Italy, Spain, Poland, and surrounding markets.
• Asia-Pacific: Established logistics to China, India, Indonesia, Thailand, Vietnam, and Australia.
• Middle East & Africa: Regular shipments to UAE, Saudi Arabia, Egypt, South Africa, and neighboring regions.
• South America: Consolidated shipping to Brazil, Chile, Colombia, and Peru.

We handle export documentation, customs compliance, and consolidated freight to major ports and industrial hubs. Bulk orders and mixed-container shipments are welcome. Contact us for lead times and shipping quotes to your destination.

Quality Assurance

Every DLLA154S334N419 nozzle undergoes strict quality control throughout the manufacturing process:

• Raw material inspection and certification of alloy steel grade
• Precision machining with dimensional verification against OEM specifications
• Heat treatment and surface hardening for wear resistance
• Spray pattern and flow rate testing on calibrated test benches
• Final visual and functional inspection before packaging

Products are backed by a standard warranty against manufacturing defects. Warranty terms and duration are confirmed at the time of order. For warranty claims, please retain your order documentation and provide engine and injector details for evaluation.

FAQ

Q1: How do I confirm this nozzle fits my engine?
A: Check the part number stamped on your existing nozzle or injector assembly. It should match DLLA154S334N419 or OEM 105015-4190. You can also provide your engine model, machine make, and injector assembly number to our team for verification before ordering.

Q2: What is involved in installing a new injector nozzle?
A: Nozzle replacement requires specialized tools and a clean working environment. The injector must be disassembled, the nozzle and needle replaced as a set, and the assembly re-torqued to specification. After installation, the injector should be tested for spray pattern and flow rate, and the fuel system purged of air. We recommend installation by a qualified diesel technician.

Q3: How should I maintain injector nozzles for long service life?
A: Use clean, high-quality diesel fuel and replace fuel filters at recommended intervals. Avoid contaminated fuel, as particles and water are primary causes of nozzle wear and sticking. Periodically inspect injectors for excessive smoke, rough idle, or power loss — these indicate nozzle wear or clogging. Timely replacement helps protect the injection pump and maintain engine performance.