The McCormick 6521406M91 is a genuine OEM fuel tank cap designed for a wide range of McCormick, Massey Ferguson, Fendt, Valtra, Challenger, and Landini agricultural tractors. This essential component provides a secure, leak-proof seal for the fuel tank, protecting the fuel system from dirt, debris, and moisture, while also preventing fuel evaporation and spillage. Manufactured to original equipment specifications, it ensures perfect fitment and reliable performance for maintaining your machinery's fuel integrity.