Product Details
Product Overview
This is a premium quality, brand new Common Rail Fuel Injector designed specifically for Weichai WP12 diesel engines. Manufactured to meet or exceed OEM specifications, this injector with part numbers 0445120265 and 0445120266 is a critical component for maintaining optimal fuel delivery and engine performance. We ship globally, serving major markets in North America, Europe, Asia-Pacific, the Middle East, Africa, and South America, ensuring your heavy-duty equipment stays operational with reliable, professional-grade parts.
Key Features & Benefits
- Precision Engineering: Manufactured with high-grade stainless steel for superior corrosion resistance and long-term durability in demanding diesel engine environments.
- 100% Professional Tested: Each unit undergoes rigorous testing to ensure precise fuel atomization, correct spray pattern, and proper opening pressure, guaranteeing optimal engine combustion and power output.
- Direct Fitment: Designed as a direct OE replacement for Weichai WP12 engines, minimizing installation time and eliminating the need for modifications.
- Enhanced Performance: Restores engine efficiency, reduces fuel consumption, and lowers emissions by maintaining the correct fuel injection timing and volume.
- Reliable Warranty: Backed by a 6-month warranty, providing peace of mind for your heavy-duty operations.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0445120265, 0445120266 |
| Type | Common Rail Fuel Injector |
| Fuel Type | Diesel |
| Condition | New |
| Material | Stainless Steel |
| Engine Application | Weichai WP12 |
| Year Range | 2016-2020 |
| Warranty | 6 Months |
| Certification | ISO 9001:2000 / TS 16949 |
| Packing | Neutral or as per request |
| Single Gross Weight | 1.000 kg |
OEM Cross-Reference
This injector is a direct cross-reference for the following OEM and part numbers:
- 0445120265 (Bosch / Common Rail Injector)
- 0445120266 (Bosch / Common Rail Injector)
These numbers are the primary identifiers for this injector used in Weichai WP12 applications. Please verify your existing part number against this list before ordering.
Compatibility
- Engine Models: Weichai WP12 series diesel engines.
- Vehicle Applications: Heavy-duty trucks, construction equipment, and industrial machinery powered by the WP12 engine.
- Year Range: Primarily designed for models manufactured between 2016 and 2020.
Global Supply & Distribution
We are a dedicated supplier of diesel engine components with a strong global logistics network. We offer:
- Worldwide Shipping: Reliable shipping options to all major continents, including North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.
- Fast Delivery: Efficient processing and shipping to major ports and industrial hubs worldwide.
- Export Expertise: Experienced in international trade with compliant documentation and secure packaging to ensure your order arrives safely.
Quality Assurance
- Manufacturing Standards: Produced in an ISO 9001:2000 and TS 16949 certified facility, ensuring adherence to strict quality management systems.
- Testing: Every injector is 100% professionally tested for flow rate, spray pattern, and pressure integrity before shipment.
- Warranty: Comes with a standard 6-month warranty against manufacturing defects.
FAQ
Q1: Is this injector a direct replacement for the original Weichai WP12 part?
A: Yes, this injector (0445120265 / 0445120266) is designed as a direct OE replacement. It matches the original specifications for a seamless fit and function, requiring no modifications for installation on compatible Weichai WP12 engines.
Q2: What are the common symptoms of a failing fuel injector on a WP12 engine?
A: Common symptoms include rough idling, reduced engine power, increased fuel consumption, excessive smoke from the exhaust (black or white), and a noticeable misfire. Replacing a faulty injector with this high-quality unit will restore performance and fuel efficiency.
Q3: Do I need to replace all injectors at once, or can I replace just one?
A: While it is possible to replace a single faulty injector, it is often recommended to replace them in sets (all 6 for a 6-cylinder WP12) to ensure balanced fuel delivery and consistent engine performance. If the other injectors are relatively new and in good condition, a single replacement is acceptable. For best results, we recommend professional diagnosis and installation.
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
Send Product Inquiry
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.
- Send OEM number, quantity, or destination in the optional message if available.
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Quick Inquiry
Weichai WP12 Common Rail Injector 0445120265 0445120266 Diesel Fuel Injector
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Inquiry Desk
Send Inquiry
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.