The McCormick 6689236A2 is a genuine OEM fuel cap designed for a range of McCormick tractor models. This essential component provides a tight seal for the fuel tank, protecting the fuel system from dirt, debris, and moisture while preventing fuel evaporation. Constructed from durable materials, it ensures long-lasting performance and maintains the integrity of your tractor's fuel system. This cap is a direct replacement for the original part, guaranteeing proper fitment and function.