Product Overview

This high-quality diesel fuel injector nozzle is a direct replacement for Cummins ISB and QSB 4.5L and 6.7L engines. Engineered for precision fuel delivery, this injector (OEM 0445120177 / 5254261) ensures optimal combustion efficiency and engine performance. We are a global supplier based in Shandong, China, serving major markets including North America, Europe, Asia-Pacific, and the Middle East with fast, reliable shipping.

Key Features & Benefits

• Precision Engineering: Manufactured to OEM specifications for a perfect fit and reliable performance in Cummins ISB/QSB engines.
• Durable Construction: Made from high-grade stainless steel to resist corrosion and wear, ensuring a long service life.
• Enhanced Fuel Efficiency: Improves fuel atomization for cleaner combustion, reducing fuel consumption and emissions.
• 100% Tested: Every unit undergoes professional testing to guarantee consistent flow rates and spray patterns.
• Direct Replacement: Simple plug-and-play installation without modifications, saving downtime and labor costs.

Technical Specifications

OEM Cross-Reference

This fuel injector nozzle directly replaces the following OEM and cross-reference numbers:

• Bosch Part Number: 0445120177
• Cummins OEM Number: 5254261
• Alternative Reference: 0445120177 / 5254261

Please verify your existing part number to ensure compatibility before ordering.

Compatibility

• Engine Models: Cummins ISB 4.5L, ISB 6.7L, QSB 4.5L, QSB 6.7L
• Vehicle Applications: Dodge Ram 2500/3500 (2007.5–2012 with 6.7L Cummins), Freightliner M2, International DuraStar, and various industrial, agricultural, and marine equipment using these engines.
• Year Range: Primarily 2007–2018 model years (confirm with your engine serial number).

Global Supply & Distribution

We provide worldwide shipping with reliable logistics partners. Our typical delivery times are:

• North America (USA, Canada, Mexico): 5–10 business days to major ports (Los Angeles, Houston, New York) and inland hubs.
• Europe (Germany, UK, Netherlands, France): 5–8 business days via air or express courier.
• Asia-Pacific (Australia, Japan, Singapore): 3–7 business days.
• Middle East (UAE, Saudi Arabia, Turkey): 5–10 business days.
• South America & Africa: 10–15 business days to major seaports.

We have extensive experience in international trade and can handle all customs documentation for smooth clearance.

Quality Assurance

Our injectors are manufactured in an ISO 9001:2000 and TS 16949 certified facility. Each unit is 100% professionally tested for spray pattern, flow rate, and sealing integrity before shipment. We offer a 6-month warranty against manufacturing defects. For bulk or OEM orders, additional testing and custom packaging are available upon request.

FAQ

Q1: Is this injector a direct fit for my 2008 Dodge Ram 3500 with the 6.7L Cummins?
A: Yes, this injector (0445120177 / 5254261) is a direct OEM replacement for 2007.5–2012 Dodge Ram models equipped with the 6.7L Cummins ISB engine. Always verify your existing part number to confirm.

Q2: Do I need to replace the injector seals and washers when installing this nozzle?
A: Yes, we recommend replacing all copper washers, O-rings, and seals when installing a new injector. This ensures a proper seal and prevents fuel leaks or compression loss.

Q3: What is the expected lifespan of this injector under normal operating conditions?
A: With proper fuel filtration and regular maintenance, this injector can last 100,000–150,000 miles (160,000–240,000 km). Using high-quality diesel fuel and changing fuel filters on schedule will maximize its service life.

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 .