The McCormick 3551756M1 is a genuine OEM fuel tank cap designed for a wide range of McCormick agricultural tractors. This essential component ensures a secure seal for the fuel tank, preventing contaminants from entering and fuel from spilling. It is compatible with numerous models across the CX, MC, MTX, XTX, TTX, X60, X70, X4, X5, X6, X7, and X8 series, providing reliable performance and a perfect fit for maintaining your machinery.