Product Overview

This is a premium remanufactured diesel fuel injector, specifically designed for high-horsepower Cummins QSK series engines including the QSK50, QSK38, and QSK19. As a critical component of the common rail fuel system, this injector ensures precise fuel delivery for optimal combustion, power output, and fuel efficiency. We are a professional supplier based in Shandong, China, with extensive experience exporting to global markets including North America, Europe, Southeast Asia, the Middle East, and South America. Our inventory supports fast, reliable shipping to major industrial ports worldwide.

Key Features & Benefits

• Precision Remanufacturing: Restored to OE specifications using high-speed steel components for long service life and dimensional accuracy.
• Enhanced Fuel Efficiency: Matches your engine’s ECU calibration to reduce fuel consumption and lower operating costs.
• Reliable Performance: Designed to withstand high injection pressures common in Cummins QSK common rail systems, ensuring consistent power delivery.
• Strict Quality Control: Each injector undergoes flow bench testing for spray pattern, opening pressure, and leak-down performance before shipment.
• Cost-Effective Solution: A high-quality remanufactured alternative to new OEM parts, providing significant savings without compromising reliability.

Technical Specifications

OEM Cross-Reference

This injector is a direct replacement for the following OEM part numbers. Please verify your specific engine application before ordering.

• Primary OEM Number: 4955526
• Alternative OEM Numbers: 4964172, 4964170

Note: These numbers may cross-reference with other Cummins or aftermarket catalogs. Always confirm fitment using your original part number.

Compatibility

• Engine Models: Cummins QSK50, QSK38, QSK19
• Application: Heavy-duty industrial, mining, marine, and power generation equipment utilizing these high-horsepower engines.
• Fuel System: Common Rail (CR) diesel injection system.

Global Supply & Distribution

We are equipped to serve the global B2B market with efficient logistics. Our standard delivery time is 3-5 days after order confirmation.

• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Japan, Singapore), Middle East (UAE, Saudi Arabia), Africa (South Africa, Nigeria), and South America (Chile, Brazil, Peru).
• Shipping Partners: We work with DHL, FedEx, UPS, and sea freight forwarders to ensure fast delivery to your nearest port or depot.
• Export Experience: Our team handles all international trade documentation, customs clearance support, and compliance with export regulations.

Quality Assurance

• Manufacturing Standards: Remanufactured in ISO-compliant facilities using OEM-grade tooling and high-speed steel materials.
• Testing: 100% tested for fuel flow rate, injection pressure, and spray pattern integrity.
• Warranty: Full 1-year warranty against manufacturing defects in materials and workmanship.

FAQ (Frequently Asked Questions)

1. Will this injector fit my Cummins QSK38 engine perfectly?

Yes, this injector is designed as a direct fit for the QSK38, as well as the QSK50 and QSK19 engines. However, we strongly recommend comparing the part number on your original injector (e.g., 4964172, 4964170, or 4955526) to ensure exact compatibility. Different engine build dates may have specific injector variants.

2. What is the installation procedure for this remanufactured injector?

Installation should be performed by a qualified diesel technician. The process generally involves removing the valve cover, disconnecting the fuel lines and electrical connectors, extracting the old injector, and installing the new one with new seals and copper washers. It is critical to torque the injector clamp to the manufacturer’s specification and to prime the fuel system before starting the engine to prevent air lock or damage.

3. How can I ensure the longevity of this remanufactured injector?

To maximize lifespan, always use clean, high-quality diesel fuel and replace the fuel filters at the recommended intervals. Contaminated fuel is the leading cause of injector failure. Additionally, ensure your engine’s ECU is properly calibrated for the injector flow rate. Regular maintenance of the fuel system will help maintain optimal performance and prevent premature wear.