Product Overview

This is a new, high-quality common rail diesel fuel injector, part number 7W7038 (also referenced as 0R-4124), engineered as a direct replacement for Caterpillar 3306 and 3306B industrial and heavy equipment engines. Manufactured to exacting standards in Shandong, China, this injector is supplied globally to meet the demands of fleet operators, heavy machinery workshops, and parts distributors in key markets across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Engineered: Manufactured from high-grade steel for superior durability and resistance to high-pressure diesel fuel systems.
• Optimal Performance: Ensures precise fuel atomization for efficient combustion, maximizing engine power and fuel economy while reducing emissions.
• Direct OEM Replacement: Designed as a 100% fit-for-purpose replacement, guaranteeing seamless installation and reliable operation in compatible engines.
• Reliable Supply: Available for immediate international shipment with neutral or WX packaging options to suit global distribution and resale needs.
• Quality Backed: Supported by a 4-month warranty, reflecting confidence in the product’s manufacturing quality and long-term performance.

Technical Specifications

OEM Cross-Reference

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

• Caterpillar: 7W7038
• Caterpillar: 0R-4124

Compatibility

This diesel fuel injector is specifically designed for the following Caterpillar engine models, commonly found in heavy-duty trucks, excavators, loaders, generators, and other industrial machinery:

• Caterpillar 3306 Engine
• Caterpillar 3306B Engine

Note: Always verify your engine’s serial number and existing part numbers before purchase to ensure correct fitment.

Global Supply & Distribution

We specialize in the international export of heavy-duty engine components. Our logistics network ensures reliable and timely delivery to major industrial hubs and ports worldwide.

• Worldwide Shipping: We ship to North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands, Poland), the Middle East (UAE, Saudi Arabia), Asia-Pacific (Australia, Singapore), and South America.
• Fast Delivery: Consolidated air and sea freight options are available for efficient delivery to key logistics centers.
• Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is prepared in full compliance with international trade regulations for smooth customs clearance.

Quality Assurance

Every injector is manufactured under strict quality control protocols to meet or exceed original equipment performance specifications.

• Manufacturing Standards: Produced using precision CNC machinery and rigorous testing equipment to ensure dimensional accuracy and functional reliability.
• Testing: Units undergo pressure testing and flow calibration checks to verify performance before packaging.
• Warranty: This product is covered by a 4-month warranty against manufacturing defects, providing peace of mind for our B2B clients.

FAQ

Q: Is this injector a direct fit for my Caterpillar 3306 engine without modification?
A: Yes. This 7W7038 injector is engineered as a direct OEM replacement. It is designed to match the exact dimensions and connection specifications of the original part for a bolt-on installation.

Q: What is the recommended installation procedure for this common rail injector?
A: We recommend installation by a qualified diesel technician. The process typically involves depressurizing the fuel system, removing the old injector, cleaning the injector bore, installing new seals (if not included), and torquing the injector to the manufacturer’s specified value. Always refer to the official Caterpillar service manual for the precise procedure.

Q: Do you offer technical support for fitment and compatibility questions?
A: Absolutely. Our professional service team provides technical support. For precise compatibility confirmation, please provide your equipment model and engine serial number. We assist distributors and workshops globally to ensure the correct part is supplied for their specific application.

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 .