The McCormick 6639285A1 is a genuine OEM brake disc designed for a wide range of McCormick agricultural tractors, including models from the C, CX, MC, MTX, X4, X5, X6, X7, X8, and XTX Series. This critical component ensures reliable braking performance and is manufactured to original equipment specifications for durability and precise fitment. It is also cross-referenced as a Case IH equivalent part, ensuring broad compatibility within CNH Industrial machinery. With an outer diameter of 95mm, an inner diameter of 51mm, and a thickness of 1.8mm, this brake disc provides optimal friction for safe operation.