The Case IH 51558559 is a genuine K80 trailer coupling designed for heavy-duty agricultural applications. This robust hitch provides a secure and reliable connection for trailers, compatible with a wide range of Case IH, New Holland, and Steyr tractors, including various models from the Puma, Optum, Magnum, Quadtrac, and Steiger series. Engineered for durability and performance, it features a D-value of 40 kN and a vertical load capacity of 4000 kg, with a hole spacing of 140 mm and a hole diameter of 26 mm.