The McCormick 6521573M1 is a genuine OEM plug designed for various agricultural and industrial applications. This essential component ensures proper sealing and functionality within compatible machinery. It is also recognized as an OEM part for Massey Ferguson, fitting a wide range of their tractor models including MF 1080, 1085, 1100, 1105, 1130, 1135, 1150, 1155, 1200, 135, 148, 150, 152, 155, 158, 165, 168, 175, 178, 185, 188, 20, 20C, 20D, 20E, 20F, 230, 231, 235, 240, 245, 250, 253, 255, 261, 265, 270, 271, 275, 281, 283, 290, 298, 30, 30B, 30E, 30H, 31, 3165, 35, 35X, 40, 40B, 40E, 50, 50A, 50B, 50C, 50D, 50E, 50F, 50H, 50HX, 550, 565, 575, 590, 595, 60, 60H, 60HX, 65, 765, 865, 95, and 97 series. Weighing approximately 0.05 kg, this plug is a critical spare part for maintenance and repair.