Product Overview

This premium Common Rail Diesel Fuel Injector (Part Number: 0445120377 / 5307809) is a direct replacement designed specifically for Cummins diesel engines. Manufactured to meet or exceed OEM specifications, this injector ensures optimal fuel atomization, improved combustion efficiency, and reduced emissions. We ship globally, serving major markets including North America, Europe, the Middle East, Southeast Asia, and Australia. This injector is ideal for heavy-duty trucks, agricultural machinery, and industrial equipment requiring reliable fuel injection performance.

Key Features & Benefits

• Precision Engineering: Manufactured with high-grade steel and advanced machining to ensure accurate fuel metering and consistent spray patterns.
• Enhanced Durability: Built to withstand high pressure and extreme temperatures, offering a long service life in demanding environments.
• OEM Standard Quality: 100% professionally tested for flow rate, spray pattern, and sealing integrity before shipment.
• Improved Fuel Economy: Optimized nozzle design helps reduce fuel consumption and lower operational costs for your fleet.
• Easy Installation: Direct bolt-on replacement with no modifications required. Includes all necessary sealing washers and O-rings.

Technical Specifications

OEM Cross-Reference

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

• Bosch: 0445120377
• Cummins: 5307809, 4307809
• Other Compatible Numbers: 0445 120 377, 0 445 120 377

Compatibility

This fuel injector is designed for use in the following engine applications:

• Engine Models: Cummins ISB, ISBe, QSB (3.9L & 5.9L variants)
• Vehicle Applications: Dodge Ram 2500/3500 (2003-2007), Freightliner M2, International DuraStar, and various agricultural & industrial equipment.
• Year Range: 2000 – 2011

Please verify your engine serial number to ensure compatibility before purchasing.

Global Supply & Distribution

We maintain a robust global supply chain to ensure fast and reliable delivery. Our distribution network covers:

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

We offer flexible shipping options including FOB, CIF, and DDP terms. Our export team handles all international trade documentation and customs clearance to ensure a seamless purchasing experience.

Quality Assurance

Every injector undergoes rigorous quality control to meet the highest industry standards:

• Testing: 100% flow bench tested for spray pattern, opening pressure, and leak tightness.
• Certifications: ISO 9001:2015 certified manufacturing facility.
• Warranty: 6-month warranty against manufacturing defects. We also offer extended warranty options for bulk orders.

FAQ

Q1: Is this injector a direct fit for my 2005 Dodge Ram 5.9L Cummins?
A: Yes, part number 0445120377 / 5307809 is a direct OEM replacement for the 2003-2007 Dodge Ram 2500/3500 with the 5.9L Cummins ISB engine. It includes the necessary copper washers. Always double-check your engine serial number for absolute confirmation.

Q2: What is the recommended installation procedure for this injector?
A: Professional installation is recommended. Key steps include: 1) Clean the injector bore thoroughly. 2) Replace the copper sealing washer and O-ring. 3) Torque the injector retaining clamp to factory specifications (typically 30-35 Nm). 4) After installation, prime the fuel system and check for leaks during engine start-up.

Q3: How do I identify if my injectors are failing?
A: Common symptoms of a failing injector include rough idling, excessive smoke (black or white), decreased fuel economy, hard starting, and engine misfires. If you experience these issues, we recommend testing all injectors simultaneously and replacing them in sets for optimal performance.

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 .