The McCormick 6678633A1 is a genuine OEM socket designed for various McCormick X-series agricultural tractors. This essential electrical component ensures proper connectivity and reliable operation within the machine's electrical system. Manufactured to McCormick's stringent quality standards, it provides a precise fit and long-lasting performance for models including the X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X5.35, X5.45, X5.55, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, and X8.680.