The John Deere RE504181 is a genuine OEM fuel injector designed for a wide range of John Deere agricultural and construction equipment. This precision-engineered component delivers fuel directly into the engine's combustion chamber, ensuring efficient fuel atomization and optimal combustion. It is crucial for maintaining engine performance, fuel economy, and reducing emissions. Manufactured to John Deere's rigorous standards, the RE504181 injector provides reliable operation and a perfect fit for compatible models, including various 6D, 7R, 8R, 9R series tractors and other machinery.