The McCormick 66193C91 is a genuine OEM clutch disc designed for a wide range of McCormick MC and MTX series agricultural tractors. This essential component ensures efficient power transmission from the engine to the gearbox, providing smooth engagement and disengagement of the clutch. With an outer diameter of 310 mm, an inner diameter of 190 mm, and 23 splines, this clutch disc is engineered for precise fit and durable performance in demanding farming operations.