Product Overview

This high-precision Common Rail Fuel Injector is a direct replacement for Weichai and JAC diesel engine applications. Engineered for modern common rail systems, it ensures optimal fuel atomization, improved combustion efficiency, and reduced emissions. As a trusted supplier from Shandong, China, we ship globally to markets including North America, Europe, Southeast Asia, the Middle East, and South America, supporting heavy-duty commercial vehicles and industrial equipment.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications for seamless fitment and reliable performance.
• Durable Construction: Made from high-grade stainless steel to withstand extreme fuel pressures and temperatures.
• Enhanced Fuel Economy: Optimized spray pattern ensures complete fuel combustion, reducing consumption and operational costs.
• 100% Tested: Every injector undergoes rigorous pressure and flow testing to guarantee professional-grade quality.
• Low Emissions: Meets stringent environmental standards by minimizing unburned fuel and particulate matter.

Technical Specifications

OEM Cross-Reference

This injector is a direct replacement for the following OEM and reference numbers:

• Bosch OEM: 0445120391, 0445120265, 0445120266
• OEM Alternative: 612630090055
• Application: Designed for Weichai and JAC diesel engines using Bosch common rail systems.

Compatibility

• Engine Models: Fits Weichai WD series and JAC HFC series diesel engines.
• Vehicle Applications: Heavy-duty trucks, buses, construction machinery, and agricultural equipment.
• Year Range: Compatible with models manufactured from 2000 onwards.
• System Type: Bosch Common Rail (CR) fuel injection systems.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable logistics solutions for international buyers, including air, sea, and express delivery.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy), Asia-Pacific (Australia, Japan, Korea, India), Middle East (UAE, Saudi Arabia, Qatar), and Africa.
• Fast Delivery: Efficient handling to major ports (Shanghai, Qingdao, Ningbo) and industrial hubs worldwide.
• Export Compliance: Experienced in international trade documentation and customs clearance for seamless transactions.

Quality Assurance

• Certifications: Manufactured under ISO 9001:2000 and TS 16949 quality management systems.
• Testing: Each injector is 100% tested for pressure, spray pattern, and flow rate before shipment.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Materials: Constructed from premium stainless steel for corrosion resistance and long service life.

FAQ

Q1: Is this injector a direct bolt-on replacement for my Weichai engine?
A: Yes, part number 0445120391 is an OEM-spec injector designed for direct replacement. It matches the original mounting dimensions, electrical connections, and fuel pressure requirements for Weichai and JAC engines using Bosch common rail systems. We recommend verifying your engine code and injector part number before purchase.

Q2: What maintenance is recommended after installing this injector?
A: After installation, ensure the fuel system is free of contaminants. It is advisable to replace the fuel filter and clean the fuel lines. Run the engine and check for leaks. For optimal performance, have the injector coding (if required by your ECU) performed by a qualified technician using a diagnostic tool.

Q3: Can I use this injector with biodiesel or high-sulfur diesel fuel?
A: This injector is designed for standard diesel fuel. While it can tolerate up to B5 (5% biodiesel blend) and low-sulfur diesel, prolonged use with high-sulfur fuel (>500 ppm) or high-concentration biodiesel may reduce the lifespan of internal components. For alternative fuels, please consult our technical team for guidance.

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 .