The McCormick 6665172A1 is a genuine OEM washer designed for use in various McCormick X6, X7, and X8 series agricultural tractors. This essential component ensures proper spacing and secure fastening within critical assemblies, maintaining the integrity and operational efficiency of your machinery. Manufactured to McCormick's exacting standards, this washer provides reliable performance and a precise fit for models including the X6.420, X6.430, X6.440, X6.460, X6.470, X6.480, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X7.690, X8.660, X8.670, and X8.680, as well as P6-DRIVE and VT-DRIVE variants.