The McCormick 6679562A1 is an original equipment manufacturer (OEM) plug designed for various McCormick X-series tractors. This essential component ensures proper sealing within the machinery's systems, preventing leaks and maintaining optimal performance. It is a direct replacement part, guaranteeing compatibility and reliable operation for your agricultural equipment. Confirmed fitment for McCormick X4, X5, X6, X7, and X8 series models.