The McCormick 6655370A1 is a genuine OEM fuel tank cap designed for a wide range of McCormick, Case IH, and New Holland agricultural tractors. This essential component ensures a tight and secure seal for the fuel tank, preventing fuel spillage and contamination. It is compatible with McCormick CX, MC, MTX, X6, X7, and X8 series, Case IH MXM and MXU series, and New Holland T6000, T7000, TM, and TS-A series models, providing reliable performance and a perfect fit.