Product Overview

This high-quality common rail fuel injector (Part Number: 0445120367 / OEM: 5283840) is specifically engineered for the Cummins QSB4.5 and QSB6.7 diesel engines. As a critical component of the fuel system, this injector ensures precise fuel atomization and optimal combustion efficiency. Designed for global B2B supply, we ship to major industrial hubs across North America, Europe, Asia-Pacific, and the Middle East, supporting heavy-duty machinery, construction equipment, and agricultural applications.

Key Features & Benefits

• Precision Engineering: Manufactured to OE specifications, ensuring a perfect fit and seamless integration with the Cummins QSB series common rail system.
• Enhanced Durability: Constructed from high-grade stainless steel, offering superior resistance to corrosion and wear under high-pressure fuel injection conditions.
• Improved Performance: Delivers consistent fuel delivery and atomization, leading to better engine power, reduced fuel consumption, and lower emissions.
• 100% Professional Testing: Every unit undergoes rigorous pressure and spray pattern testing to guarantee reliability and performance out of the box.
• Cost-Effective Solution: A premium new part at a competitive price point, offering a reliable alternative to expensive OEM replacements.

Technical Specifications

OEM Cross-Reference

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

• Cummins OEM: 5283840
• Bosch Common Rail Nozzle: 0445120367

Note: Always verify your existing part number before purchase to ensure compatibility.

Compatibility

• Engine Models: Cummins QSB4.5, Cummins QSB6.7
• Vehicle/Equipment Applications: Compatible with various off-highway equipment, including construction loaders, excavators, agricultural tractors, and generator sets powered by these engines.
• Year Range: Suitable for engine models produced from 2006 onwards.

Global Supply & Distribution

We are a dedicated supplier of diesel engine components with a robust export network. We offer reliable worldwide shipping to major ports and industrial centers, including:

• North America: Los Angeles, Houston, Toronto
• Europe: Rotterdam, Hamburg, Antwerp
• Asia-Pacific: Shanghai, Singapore, Sydney
• Middle East & Africa: Dubai, Jebel Ali, Durban

We manage all international trade documentation and offer flexible shipping options (Express, Air Freight, Sea Freight) to meet urgent or bulk order requirements.

Quality Assurance

• Certifications: Our manufacturing process is certified under ISO 9001:2000 and TS 16949, ensuring strict quality control from raw material to final assembly.
• Testing: Each injector is 100% professionally tested for opening pressure, spray pattern, and leak tightness before packaging.
• Warranty: We stand behind the quality of our product with a 6-month warranty against manufacturing defects.

FAQ

Q1: How can I confirm this injector will fit my engine?
A: Please check the part number on your existing injector. If it reads 0445120367 or the OEM number is 5283840, this unit is a direct fit. Ensure your engine model is either a Cummins QSB4.5 or QSB6.7.

Q2: What is the installation process for this injector?
A: Installation should be performed by a qualified diesel technician. Key steps include cleaning the injector bore, replacing the copper washer, and tightening the injector clamp to the manufacturer’s specified torque. Always replace the high-pressure fuel lines and seals if recommended by the service manual.

Q3: What maintenance is required for these injectors?
A: For optimal performance, use high-quality diesel fuel and replace your fuel filters at regular intervals. We recommend having the injectors inspected every 2,000 operating hours or as per your equipment’s maintenance schedule. This injector requires no user-serviceable internal adjustments.

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 .