Product Overview

This high-quality diesel engine common rail fuel injector, referencing OEM numbers 387-9434 and 10R-7221, is a direct replacement component designed specifically for Caterpillar C9 engines used in 320D excavators. Manufactured to meet stringent industry standards, this injector ensures optimal fuel atomization and combustion efficiency. We serve a global B2B clientele, with extensive shipping to North America, Europe, the Middle East, and Asia-Pacific markets, providing reliable supply chain solutions for heavy equipment maintenance and repair.

Key Features & Benefits

• Precision Engineering: Manufactured from high-grade steel for superior durability and long service life in harsh operating conditions.
• Enhanced Performance: Designed for precise fuel delivery, improving engine power output, fuel economy, and reducing emissions.
• Direct Fitment: 100% new replacement part, matching OEM specifications for a seamless installation without modifications.
• Rigorous Testing: Each injector undergoes pressure and flow testing to ensure consistent performance and reliability.
• Cost-Effective Solution: A premium alternative to OEM parts, offering significant savings without compromising on quality.

Technical Specifications

OEM Cross-Reference

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

• Caterpillar OEM: 387-9434
• Caterpillar OEM: 10R-7221
• Alternative Number: 3879434

Compatibility

This injector is specifically designed for the following applications:

• Engine Model: Caterpillar C9
• Equipment: Caterpillar 320D Excavator
• System: Diesel Common Rail Fuel Injection System

Note: Always verify compatibility by cross-referencing your original part number before purchase.

Global Supply & Distribution

We are a dedicated supplier to the global heavy equipment aftermarket. Our logistics network ensures fast and reliable delivery to major industrial hubs worldwide.

• North America: Fast shipping to ports like Los Angeles, Houston, and New York.
• Europe: Efficient delivery to Rotterdam, Hamburg, and Antwerp.
• Asia-Pacific: Quick dispatch to Singapore, Shanghai, and Dubai.
• Middle East & Africa: Reliable service to Jebel Ali, Dammam, and Durban.

We offer flexible shipping options including express courier (DHL, FedEx, UPS) and sea freight for bulk orders. Our team manages all export documentation for a hassle-free purchasing experience.

Quality Assurance

• Manufacturing Standards: Produced in an ISO-certified facility with strict quality control processes.
• Testing: Each injector is individually tested for flow rate, pressure, and spray pattern.
• Warranty: Covered by a 3-month warranty against manufacturing defects.
• Packaging: Professionally packed in neutral or branded packaging to ensure safe transit.

FAQ

Q1: Is this injector a direct replacement for my Caterpillar 320D excavator?
A: Yes, this injector (387-9434 / 10R-7221) is a direct OEM replacement for the Caterpillar C9 engine found in the 320D excavator. It is a “plug-and-play” component that requires no modifications.

Q2: What is the recommended installation procedure?
A: Installation should be performed by a qualified mechanic. Ensure the fuel system is clean and free of debris. Replace the injector sealing washer and copper gasket. Torque the injector clamp bolt to the manufacturer’s specifications to prevent leaks and ensure proper sealing.

Q3: How should I maintain my new fuel injectors for optimal performance?
A: Use high-quality diesel fuel and replace your fuel filters regularly. Contaminated fuel is the primary cause of injector failure. Periodically check for any signs of fuel leaks around the injector base. Following the engine manufacturer’s recommended maintenance schedule will maximize the lifespan of your injectors.

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 .