Product Overview

This professional-grade Bosch Common Rail Diesel Fuel Injector (Part Number: 0445120255) is a new, high-precision component specifically engineered for Cummins diesel engines used in heavy-duty trucks and industrial applications. As a leading supplier from Shandong, China, we serve the global B2B market, exporting to North America, Europe, Asia-Pacific, the Middle East, and South America. Our inventory supports rapid fulfillment to major industrial ports and logistics hubs worldwide, ensuring minimal downtime for your fleet or workshop.

Key Features & Benefits

• 100% Professional Testing: Every injector undergoes rigorous bench testing for flow rate, spray pattern, and pressure calibration to guarantee OEM-level performance.
• Superior Durability: Manufactured with hardened steel and precision-machined internal components to withstand extreme combustion pressures and temperatures.
• Direct Fitment: Designed as a direct OE replacement, eliminating the need for modifications or adapters during installation.
• Fuel Efficiency: Optimized spray characteristics ensure complete fuel atomization, reducing consumption and lowering emissions.
• 6-Month Warranty: Backed by a comprehensive warranty, providing peace of mind for bulk orders and long-term supply agreements.

Technical Specifications

OEM Cross-Reference

This injector is a direct cross-reference for the following OEM and aftermarket part numbers:

• Bosch OEM: 0445120255
• Cummins OEM: 0445120255 (Common rail system applications)
• Alternative Numbers: Compatible with other variations of the 0445 series injectors used in ISB, ISC, and ISL engine families.

Note: Always verify the original part number on your existing injector before ordering.

Compatibility

This injector is designed for use in the following applications:

• Engine Models: Cummins ISB, ISC, ISL, and similar common rail diesel engines (2000-2020 models).
• Vehicle Applications: Heavy-duty diesel trucks, construction equipment (excavators, loaders), agricultural tractors, and generator sets.
• Specific Fitment: Suitable for both on-highway and off-highway equipment utilizing Bosch CP1/CP3 common rail fuel systems.

Global Supply & Distribution

We offer comprehensive global logistics solutions to meet the demands of B2B buyers:

• Shipping Methods: DHL, UPS, FedEx, EMS, TNT, and sea freight for bulk orders (MOQ: 4 pieces).
• Delivery Time: 3-7 business days via express courier; 15-30 days for sea freight to major ports (Los Angeles, Rotterdam, Shanghai, Dubai).
• Major Markets Served: United States, Canada, Germany, UK, Australia, UAE, Saudi Arabia, Brazil, South Africa, and Southeast Asia.
• Export Compliance: All shipments comply with international trade regulations, with full documentation provided (Commercial Invoice, Packing List, Certificate of Origin).
• Payment Terms: T/T (Bank Transfer), Western Union, PayPal, and negotiable terms for repeat customers.

Quality Assurance

• Manufacturing Standards: Produced in an ISO 9001-certified facility in Shandong, China, ensuring consistent quality control.
• Testing: Each injector is 100% tested for opening pressure, back leakage, and spray pattern using Bosch-compatible test benches.
• Packaging: Individual protective packaging (customized options available) to prevent damage during transit.
• Warranty: 6-month warranty against manufacturing defects (does not cover damage from improper installation, fuel contamination, or misuse).

FAQ

Q1: Is this injector a direct replacement for the Bosch 0445120255 on my Cummins ISB engine?
Yes, this injector is a 100% new, direct OE replacement. It matches the Bosch 0445120255 specifications and is designed to fit Cummins ISB, ISC, and ISL common rail engines without any modifications. We recommend verifying your engine’s serial number and the existing injector part number for absolute compatibility.

Q2: What is the recommended installation procedure for this injector?
Installation should be performed by a qualified diesel technician. Key steps include: (1) Clean the injector bore thoroughly. (2) Lubricate the O-rings with clean engine oil. (3) Torque the injector clamp to manufacturer specifications (typically 20-25 Nm). (4) Replace the high-pressure fuel lines and seals. (5) Prime the fuel system and check for leaks before starting the engine.

Q3: How should I maintain these injectors to maximize their lifespan?
To ensure longevity, use only high-quality diesel fuel with proper cetane ratings. Regularly replace fuel filters (every 10,000-15,000 miles or per OEM schedule). Avoid operating the engine with a clogged air filter or contaminated fuel, as this can cause injector fouling. For bulk buyers, we recommend storing injectors in a dry, temperature-controlled environment and using them within 12 months of purchase.

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 .