The Case IH 504221257 is a genuine OEM fuel injection nozzle designed for FPT engines. This critical component ensures precise fuel delivery for optimal engine performance and efficiency in a wide range of Case IH, New Holland, and Steyr agricultural tractors, including models from the Farmall, JX, Quantum, T4, TD5, TL, TN, and Kompakt series. As an original CNH Industrial part, it guarantees compatibility and reliability for maintaining your machinery.