Product Details
Product Overview
This high-quality Common Rail Fuel Injector, featuring the nozzle type Dlla143p1696 (OE No. 0445120389), is specifically designed for Weichai WP12 diesel engines. As a critical component in modern diesel fuel systems, this injector ensures precise fuel delivery for optimal combustion efficiency and engine performance. Sourced from a certified ISO/TS 16949 manufacturer in Shandong, China, this injector is a reliable replacement part for heavy-duty applications. We serve a global clientele, with fast shipping to major markets including North America, Europe, Southeast Asia, the Middle East, and Africa, ensuring minimal downtime for your fleet.
Key Features & Benefits
- Precision Engineering: Manufactured to strict OEM specifications (0445120389) for seamless fitment and operation in Weichai WP12 engines.
- Superior Durability: Constructed from high-grade stainless steel to resist corrosion and wear, ensuring a long service life even under high-pressure common rail conditions.
- Optimized Fuel Atomization: The Dlla143p1696 nozzle design provides excellent fuel spray patterns, leading to better combustion, increased power output, and reduced fuel consumption.
- 100% Professional Testing: Every injector undergoes rigorous testing for flow rate, pressure, and spray pattern to guarantee “New” condition and reliable performance right out of the box.
- Cost-Effective Solution: A premium quality aftermarket alternative to expensive dealer parts, backed by a 6-month warranty and competitive pricing for B2B buyers.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number (OE) | 0445120389 |
| Alternate Part Number | 0445120304 |
| Nozzle Type | Dlla143p1696 |
| Engine Application | Weichai WP12 |
| Fuel Type | Diesel (Common Rail) |
| Material | Stainless Steel |
| Condition | New |
| Quality Standard | ISO 9001:2000 / TS 16949 |
| Warranty | 6 Months |
| Unit Weight | Approx. 1.0 kg |
| Packing | Neutral or Custom Branding Available |
OEM Cross-Reference
This injector is a direct replacement for the following OEM and reference numbers:
- Primary OEM: 0445120389 (Bosch Common Rail Injector)
- Alternate Reference: 0445120304
- Nozzle Reference: Dlla143p1696
Note: Always verify your existing part number before purchase. This injector is designed for the Weichai WP12 engine platform.
Compatibility
- Engine Model: Weichai WP12 (Wp12 Series)
- Vehicle Make: For Weichai (Diesel Car/Truck Applications)
- Year Range: 2000+ (Standard engine size)
- Application: Heavy-duty trucks, construction machinery, and industrial equipment powered by the WP12 engine.
Global Supply & Distribution
We are a dedicated supplier of diesel engine parts with a robust logistics network. Our commitment to global distribution ensures that your order reaches you quickly and reliably, no matter where you are located.
- Worldwide Shipping: We ship to all major continents via air, sea, and express courier (DHL, FedEx, TNT).
- Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Singapore, Indonesia), Middle East (UAE, Saudi Arabia), Africa (Nigeria, South Africa), and South America (Brazil, Chile).
- Fast Delivery: Efficient processing and packing ensure dispatch within 24-48 hours. Standard transit times to major ports and industrial hubs are 5-10 business days.
- Export Experience: We handle all international trade compliance and documentation, including customs clearance support, to ensure a smooth transaction for our B2B partners.
Quality Assurance
Quality is the cornerstone of our business. We adhere to strict manufacturing and testing protocols to ensure every part meets or exceeds OEM standards.
- Certifications: Our manufacturing facility is ISO 9001:2000 and TS 16949 certified, reflecting our commitment to quality management systems in the automotive sector.
- Warranty: We offer a standard 6-month warranty against manufacturing defects, providing you with peace of mind for your investment.
- Testing: Each injector is subject to a 100% professional test, including calibration for opening pressure, leak testing, and spray pattern analysis on specialized common rail test benches.
FAQ
Q1: Is this injector a direct fit for my Weichai WP12 engine? How can I be sure?
Yes, this injector (0445120389 / 0445120304) is specifically designed for the Weichai WP12 engine platform. To confirm compatibility, please check the OE number printed on your existing injector. It should match either 0445120389 or 0445120304. The nozzle type is Dlla143p1696. If you are unsure, please contact us with your engine serial number for verification.
Q2: What is the recommended installation procedure for this common rail injector?
Installation should be performed by a qualified diesel technician. Key steps include: 1) Thoroughly cleaning the injector bore in the cylinder head. 2) Replacing the copper washer and sealing O-rings with new ones (not included). 3) Tightening the injector clamp to the manufacturer’s specified torque. 4) After installation, the system must be primed and bled of air. We strongly recommend using a diagnostic tool to code the injector to the ECU if required by your engine management system.
Q3: How should I store this injector before installation?
To maintain its “New” condition and prevent contamination, store the injector in its original packaging in a clean, dry environment. Avoid exposing it to dust, moisture, or extreme temperatures. The protective caps on the fuel inlet and nozzle tip should remain in place until the moment of installation to prevent damage to the precision-machined surfaces.
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 .
FAQ
Common Product Inquiry Questions
How can I confirm this part matches my engine or injector model?
Send the OEM number, engine model, application, or clear product photos. We will help verify the suitable part before quotation.
Can I ask for packing, shipping, and delivery details together?
Yes. You can combine product confirmation, quantity, destination, packing request, and shipment method in one inquiry so the quotation is more complete.
Why is price not displayed on the page?
This catalog is built for B2B inquiry. Final pricing depends on the confirmed part number, quantity, stock situation, and shipping destination.
What information helps you quote faster?
Please include the OEM number, engine model, quantity, destination country, and any packing or shipping preference. This usually speeds up matching and quotation.
Inquiry Desk
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Use this form to ask for fitment, MOQ, delivery time, packing, and shipping support for this product.
- Simple inquiry flow with direct sales follow-up.
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Quick Inquiry
Weichai WP12 Engine Common Rail Fuel Injector 0445120389 Nozzle Dlla143p1696
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Inquiry Desk
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Quick contact for this product. OEM number is attached automatically.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.