Rayfuel Fuel Injector – 4307516. Our fuel injectors deliver precise fuel injection to optimize engine performance and fuel efficiency. Manufactured with OEM-compatible design, they ensure a perfect fit for seamless installation across various vehicle models. 100% tested for precision and durability. For Cummins N14 QSN14 Engine. 1 X Fuel Injector. Cool Down: Make sure the engine is cool and clean the injector area. Remove: Carefully remove the old injector using proper tools. Install: Insert the new Rayfuel injector with the included washer. Tighten: Torque according to vehicle specifications. Prime: Prime the fuel system and check for leaks. Start: Start the engine and let it idle for a few minutes to stabilize. Professional install is highly recommended. Installation instructions not included. Please leave your physical address (home or office). Do not leave P. Or just tell us the part number you need. Please leave your full name, telephone number, and full address when ordering. Make sure both are correct before paying. Eastern Europe, South America. Japan, Singapore, Thailand, Malaysia, India. If you have any questions or concerns, feel free to reach out to us.