Product Details
Product Overview
This high-performance common rail fuel injector is a direct replacement for Caterpillar C7 and C9 diesel engines. Designed for global B2B distribution, this injector meets stringent OEM specifications for reliability and fuel efficiency. We serve major markets across North America, Europe, Asia-Pacific, and the Middle East, ensuring fast and reliable shipping to industrial hubs worldwide.
Key Features & Benefits
- Premium Build Quality: Manufactured from high-speed steel for exceptional durability and resistance to wear under extreme pressure.
- 100% Professional Testing: Each injector undergoes rigorous testing to guarantee precise fuel atomization and optimal engine performance.
- Direct OEM Replacement: Engineered to match the form, fit, and function of the original Caterpillar part, ensuring seamless installation.
- Enhanced Fuel Efficiency: Advanced common rail design delivers accurate fuel metering, reducing consumption and emissions.
- Long Service Life: Built to withstand high-temperature and high-pressure conditions, providing reliable operation over extended periods.
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 10R-7225 / 387-9428 / 557-7627 |
| OEM Number | 3879428 |
| Fuel Type | Diesel |
| Material | High Speed Steel |
| Condition | New |
| Weight | Standard (approx. 0.5 kg per unit) |
| Color | Silver |
| Application | Fuel Injection System |
| Quality | 100% Professional Tested |
| Warranty | 8 Months |
| Place of Origin | Shandong, China |
OEM Cross-Reference
This injector is a direct replacement for the following OEM and cross-reference numbers:
- OEM Number: 387-9428 (Caterpillar)
- Alternate Part Numbers: 10R-7225, 557-7627
- Additional References: 10R7225, 3879428, 5577627
Compatibility
This common rail injector is designed for the following engine models and applications:
- Engine Models: Caterpillar C7, Caterpillar C9
- Vehicle/Equipment Applications: On-highway trucks, construction equipment, and industrial machinery equipped with C7 or C9 diesel engines.
- Year Ranges: Compatible with most C7 and C9 engine variants produced from the early 2000s onward. Please verify your engine serial number for exact fitment.
Global Supply & Distribution
We provide worldwide shipping with a focus on speed and reliability. Our logistics network ensures fast delivery to major ports and industrial centers, including:
- North America: Los Angeles, Houston, Chicago, Toronto
- Europe: Rotterdam, Hamburg, Antwerp, London
- Asia-Pacific: Shanghai, Singapore, Tokyo, Sydney
- Middle East & Africa: Dubai, Jeddah, Durban
Our export experience spans over a decade, with full compliance with international trade regulations. We offer flexible shipping options to meet your project deadlines.
Quality Assurance
We adhere to strict manufacturing standards to ensure every injector meets or exceeds OEM requirements.
- Manufacturing Standards: ISO 9001 compliant production facility.
- Testing: Each unit undergoes 100% professional testing for flow rate, pressure, and spray pattern accuracy.
- Warranty: 8-month warranty against manufacturing defects, providing peace of mind for your operations.
FAQ
Q1: Will this injector fit my Caterpillar C7 engine from 2005?
A1: This injector is designed for Caterpillar C7 and C9 engines, typically from the early 2000s onward. However, we recommend verifying your engine’s specific serial number against the OEM part number 387-9428 to ensure compatibility. Variations in fuel system configurations may exist.
Q2: What is the recommended installation procedure for this common rail injector?
A2: Installation should be performed by a qualified diesel technician. Ensure the fuel system is depressurized, and the injector bore is clean before installation. Use new seals and torque the injector to manufacturer specifications (typically 40-50 Nm). After installation, prime the fuel system and check for leaks before starting the engine.
Q3: How can I maximize the lifespan of this injector?
A3: To extend service life, use high-quality diesel fuel with proper filtration. Regularly replace fuel filters as per the engine manufacturer’s schedule. Avoid running the engine on low fuel, which can introduce air into the system. Periodic inspection of the injector’s spray pattern during maintenance can help detect issues early.
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 .
FAQ
Common Product Inquiry Questions
How can I confirm this part matches my engine or injector model?
Send the OEM number, engine model, application, or clear product photos. We will help verify the suitable part before quotation.
Can I ask for packing, shipping, and delivery details together?
Yes. You can combine product confirmation, quantity, destination, packing request, and shipment method in one inquiry so the quotation is more complete.
Why is price not displayed on the page?
This catalog is built for B2B inquiry. Final pricing depends on the confirmed part number, quantity, stock situation, and shipping destination.
What information helps you quote faster?
Please include the OEM number, engine model, quantity, destination country, and any packing or shipping preference. This usually speeds up matching and quotation.
Inquiry Desk
Send Product Inquiry
Use this form to ask for fitment, MOQ, delivery time, packing, and shipping support for this product.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.
Related Products
More Products In This Catalog
-
-
High Quality Diesel Fuel Injector Spring 2434614020 for Engine Models | High Speed Steel
MOQ: 1pcs
Price: Negotiable
-
High Speed Steel Diesel Fuel Injector Nozzle DN20PD32 150P068 for Common Rail Injection System
MOQ: 1pcs
Price: Negotiable
-
DENSO Diesel Fuel Injector Nozzle 093400-7680 DLLA146P768 for Hitachi Excavator Engine
MOQ: 1pcs
Price: Negotiable
Quick Inquiry
Caterpillar C7 C9 10R-7225 387-9428 557-7627 Common Rail Fuel Injector | Diesel Engine Part
Send one clear inquiry and we will reply with quotation, lead time, and fitment confirmation.
- OEM number is included automatically when available.
- Add quantity, destination, and packing needs for a faster quote.
Inquiry Form
Send Inquiry
Leave your email and phone / WhatsApp so sales can follow up directly.
Inquiry Desk
Send Inquiry
Quick contact for this product. OEM number is attached automatically.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.