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Product Details
Product Overview
This high-quality diesel injector nozzle, the Zexel 105015-4190 (OEM: DLLA154S334N419), is a critical fuel system component designed for precision fuel delivery in Isuzu 6HH1 engines. Commonly fitted to the Isuzu NPR series trucks and buses manufactured between 1976 and 1993, this nozzle ensures optimal atomization for efficient combustion and engine performance.
As a genuine Zexel product originating from Japan, this nozzle meets the exacting standards required for heavy-duty commercial applications. It is a direct replacement part that restores fuel economy and power output in aging Isuzu diesel engines. Please verify your engine code (6HH1) and existing part number to confirm fitment before purchase.
Key Features & Benefits
Genuine Zexel Quality: Manufactured in Japan to original equipment specifications, ensuring a perfect match for your Isuzu 6HH1 injection system.
Precision Fuel Atomization: The DLLA154S334N419 nozzle design ensures a fine fuel spray pattern for complete combustion, reducing smoke and improving fuel efficiency.
Long-Lasting Durability: Constructed from high-grade hardened steel to withstand the extreme pressures and temperatures within the combustion chamber, offering extended service life.
Direct OEM Replacement: Part number 105015-4190 is a direct cross-reference to the original Zexel DLLA154S334N419, simplifying your parts procurement process.
Restored Engine Performance: Replacing worn nozzles with this unit will restore lost horsepower, eliminate rough idling, and improve cold-start reliability.
Verified Compatibility: Specifically engineered for the Isuzu 6HH1 engine found in the NPR model series, a common platform in global commercial fleets.
Technical Specifications
Specification
Detail
Part Number
105015-4190
OEM Number
DLLA154S334N419
Product Name
Diesel Injector Nozzle
Model
DLLA154S334N419
Application
Auto Part (Fuel Injection System)
Condition
Genuine / New
Place of Origin
Japan
Warranty
6 Months
Engine Code
6HH1
Car Model
Isuzu NPR
OEM Cross-Reference
This injector nozzle is a direct equivalent to the following original equipment numbers. Use this list to verify compatibility with your existing stock.
Zexel: DLLA154S334N419
Zexel (Alternate): 105015-4190
Isuzu: 8-98023-526-0 (Cross-reference where applicable)
Compatibility
This part is specifically designed for the following applications. Fitment is based on the original equipment application data provided.
Engine: Isuzu 6HH1
Vehicle Models: Commonly used for Isuzu NPR series trucks, buses, and commercial vehicles.
Year Range: 1976-1993
Important: Always verify your specific engine code and existing part number before ordering. Variations may exist between chassis models.
Global Supply & Distribution
We specialize in the global export of diesel engine components, ensuring fast and reliable delivery to industrial centers worldwide. Our inventory of Zexel nozzles supports both scheduled maintenance and emergency breakdown repairs.
Major Markets: North America, Europe, Southeast Asia (including Japan, Thailand, Indonesia), Middle East, and Africa.
Shipping: We offer express shipping (DHL, FedEx, UPS) for urgent orders and economical sea freight for bulk purchases to major ports like Los Angeles, Rotterdam, and Singapore.
Trade Compliance: We adhere to international trade standards, providing all necessary documentation (Commercial Invoice, Packing List, Certificate of Origin) for smooth customs clearance.
Quality Assurance
Every nozzle supplied is subject to rigorous quality control to ensure it meets the high standards required for commercial diesel engines.
Manufacturing Standard: Produced to OEM specifications in ISO-certified facilities in Japan.
Testing: Each unit is tested for spray pattern, opening pressure, and leakage to guarantee performance out of the box.
Warranty: Backed by a 6-month warranty against manufacturing defects. After-warranty service includes video technical support to assist with installation diagnostics.
FAQ
Q: How do I confirm if this nozzle fits my Isuzu NPR?
A: First, check your engine code, which should be stamped on the engine block. It must read “6HH1”. Second, remove the old nozzle and look for the part number printed on its body. It should match either 105015-4190 or DLLA154S334N419. If both match, this nozzle is the correct replacement.
Q: What are the signs that my injector nozzles need replacing?
A: Common symptoms include hard starting, excessive black smoke from the exhaust, rough idling (engine “miss”), a noticeable drop in fuel economy, and loss of power under load. If you have a misfire on one cylinder, replacing the nozzle for that cylinder is often the first step in diagnosis.
Q: Can I install this nozzle myself, or do I need a professional?
A: While a skilled mechanic can replace the nozzle, we recommend installation by a qualified diesel technician. The nozzle must be installed with the correct torque and the fuel return system must be properly sealed to prevent leaks. After installation, the injector pump timing and fuel delivery balance may need professional adjustment for optimal performance.
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