Product Overview

This high-quality diesel fuel injector nozzle set (Part Numbers: 4W7017, 4W7018, 4W7019) is a direct replacement for Caterpillar heavy-duty engines. Designed for precision fuel delivery, these injectors are essential for restoring engine performance, fuel efficiency, and reducing emissions in your Cat equipment. Sourced from a certified manufacturer in Shandong, China, we supply to major markets including North America, Europe, the Middle East, and Asia-Pacific with fast shipping via DHL, FedEx, or sea freight.

Key Features & Benefits

• OEM Standard Quality: Manufactured to match original Caterpillar specifications for a perfect fit and reliable operation.
• High Durability: Constructed from premium stainless steel to withstand extreme combustion pressures and temperatures, ensuring a long service life.
• Improved Engine Performance: Ensures optimal fuel atomization and injection timing, leading to smoother idling, increased horsepower, and better fuel economy.
• 100% Tested: Every injector undergoes rigorous pressure and spray pattern testing before shipment to guarantee zero defects.
• Cost-Effective Solution: A reliable aftermarket alternative to expensive OEM parts, offering significant savings without compromising quality.

Technical Specifications

OEM Cross-Reference

This injector nozzle set directly replaces the following OEM part numbers:

• Caterpillar OEM: 4W7017, 4W7018, 4W7019

Note: These are direct replacement numbers. No additional adapters or modifications are required.

Compatibility

This fuel injector set is specifically designed for the following Caterpillar engine models:

• Caterpillar 3406B (Heavy-duty truck and industrial engine)
• Caterpillar 3306 (Mid-range industrial and marine engine)
• Caterpillar 3412 (High-horsepower V12 engine)

Application: Suitable for use in Caterpillar excavators, bulldozers, generators, and heavy trucks equipped with these engine models. Always verify your engine serial number and injector type before purchasing.

Global Supply & Distribution

We are a dedicated supplier of diesel engine components with a robust global logistics network. We offer:

• Worldwide Shipping: Reliable delivery via air (DHL, UPS, FedEx) and sea (FCL/LCL) to any destination.
• Major Markets Served: United States, Canada, Germany, UK, UAE, Saudi Arabia, Australia, South Africa, and Southeast Asia.
• Fast Turnaround: Orders are processed and shipped within 3-7 business days from our warehouse in Shandong, China.
• Trade Compliance: We handle all export documentation to ensure smooth customs clearance.

Quality Assurance

• Manufacturing Standard: Produced in an ISO 9001 certified facility using advanced CNC machining and heat treatment processes.
• Testing: Each injector is 100% professionally tested for spray pattern, opening pressure, and leak tightness.
• Warranty: Backed by a 6-month warranty against manufacturing defects. Please contact us for any quality concerns.

FAQ

Q1: Are these injectors direct fit for my 3406B engine?
Yes, these injectors (4W7017, 4W7018, 4W7019) are designed as a direct replacement for the specified models. However, we recommend checking your injector’s current part number and your engine’s serial number to confirm compatibility, as there may be different injector series for specific applications.

Q2: What is the recommended installation procedure?
Installation should be performed by a qualified diesel mechanic. Ensure the injector bore is clean and free of debris. Always replace copper washers and O-rings. Torque the injector hold-down clamp to factory specifications to prevent leakage or damage.

Q3: How should I maintain these injectors for long life?
Use high-quality diesel fuel and regularly replace your fuel filters. Contaminated fuel is the leading cause of injector failure. If you notice rough idling, black smoke, or a loss of power, have the injectors tested immediately.