The Case IH 504361851 is a genuine OEM valve seat designed for specific Case IH, New Holland, and Steyr engines. This critical component ensures proper valve sealing and engine performance. It is compatible with a range of agricultural tractors, combines, and construction equipment, including models from the Puma, Maxxum, Optum, Magnum, and Quadtrac series, as well as New Holland T6, T7, T8, CR, CX, and FR series, and Steyr Profi, Impuls CVT, and Terrus CVT models. Always verify fitment with your specific machine model and engine type.