
Product Overview
This is a genuine Zexel fuel injector nozzle, part number 131150-4320, engineered for the Isuzu 6BG1 A831 engine series. Manufactured to exacting OEM specifications in Japan, this component is essential for maintaining optimal fuel delivery, engine performance, and emissions control. We specialize in the global supply of high-quality Japanese engine parts, serving major markets across North America, Europe, Asia-Pacific, and the Middle East with reliable shipping and export compliance.
Key Features & Benefits
- Genuine OEM Quality: Original Zexel manufacturing ensures perfect fitment, performance, and longevity identical to the factory-installed part.
- Precision Fuel Atomization: Engineered to deliver an exact spray pattern for efficient combustion, maximizing power output and fuel economy.
- Enhanced Durability: Manufactured from high-grade materials to withstand high-pressure fuel systems and extreme engine operating conditions.
- Reliable Engine Performance: Restores factory-level engine smoothness, throttle response, and helps maintain compliant emission levels.
- Direct Replacement: Designed as a direct bolt-on component for the 6BG1 engine, ensuring straightforward installation without modifications.
Technical Specifications
| Specification | Detail |
|---|---|
| Primary Part Number | 131150-4320 |
| Alternate Part Number | 1311504320 |
| Brand | Zexel (Denso) |
| Engine Model | Isuzu 6BG1 (A831 Series) |
| Component Type | Fuel Injector Nozzle / Injection Nozzle |
| Country of Manufacture | Japan |
| Condition | New, Genuine |
OEM Cross-Reference
This genuine Zexel part is the original equipment component. It may also be referenced under the following part numbers:
- Zexel: 131150-4320, 1311504320
- Isuzu: 8-94185-369-0 (Please verify with your Isuzu dealer for the latest OEM interchange)
Compatibility
This fuel injector nozzle is specifically designed for the Isuzu 6BG1 diesel engine, particularly the A831 variant. This engine is commonly found in:
- Isuzu Forward / Elf trucks (specific model years utilizing the 6BG1 engine)
- Isuzu Giga trucks
- Various industrial and generator applications powered by the 6BG1 engine.
Note: Always verify the existing part number on your engine or consult your vehicle’s service manual to ensure correct application before purchase.
Global Supply & Distribution
We are a trusted supplier in the global automotive parts network. Our logistics are optimized for international B2B trade:
- Worldwide Shipping: We export to all major markets, including North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands), Asia-Pacific (Australia, Singapore, Indonesia), and the Middle East (UAE, Saudi Arabia).
- Efficient Logistics: Fast container (FCL/LCL) and air freight services to major ports and industrial hubs worldwide.
- Trade Compliance: All shipments are prepared with complete and accurate commercial invoices, packing lists, and harmonized system (HS) codes for smooth customs clearance.
- Bulk Order Support: Dedicated support for wholesale, distributor, and fleet procurement requirements.
Quality Assurance
- Manufacturing Standard: Produced on original Zexel tooling, meeting strict Japanese OEM quality control protocols.
- Certification: 100% genuine part, backed by the manufacturer’s quality assurance.
- Testing: Each nozzle undergoes precision testing to ensure leak-free operation and correct spray pattern specification.
- Warranty: Covered by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.
FAQ
Q1: How can I confirm this injector nozzle fits my Isuzu 6BG1 engine?
A1: The surest method is to cross-reference the part number. Remove the old injector nozzle and match the stamped number (typically 131150-4320 or 1311504320) with our listing. You can also verify your engine’s model code (6BG1-A831) and consult your engine service manual.
Q2: Is this a single nozzle or a complete injector assembly?
A2: This listing is for the fuel injector nozzle itself, which is the precision tip component responsible for fuel atomization. It is not the complete injector body assembly. Please ensure you are purchasing the correct component for your repair needs.
Q3: Do you provide technical support for installation?
A3> While we supply the genuine OEM part, installation and calibration of diesel fuel injector nozzles are complex procedures that require specialized tools and expertise. We recommend installation and pressure testing be performed by a qualified diesel technician to ensure optimal performance and avoid engine damage.
Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
Exhibition

Packing&Shipping

1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ
Q1. What is your company major products?
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
Q2.What is the MOQ?
A: Normally we can supply any quantity if we have in stock.
Q3. What is your payment term ?
A: We accept Western Union, T/T, Paypal.
Q4. What is the packing ?
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
Q5. When can you deliver products after payment ?
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
Q6. What can you do to complete order perfectly ?
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .