The McCormick 3676771M91 is a genuine OEM brake disk designed for various McCormick tractor models, including the C-MAX, CX, MC, MTX, X50M, X60, and X70 series. This essential component ensures reliable braking performance with an outer diameter of 180 mm, an inner diameter of 100 mm, and a thickness of 11 mm. It is also cross-referenced as 3676771M91 for Massey Ferguson and Landini applications, highlighting its broad compatibility within the AGCO family of agricultural machinery.