This genuine McCormick 4204071M1 fuel tank cap is an essential replacement part designed for a wide range of McCormick agricultural tractors. It ensures a secure seal for the fuel tank, preventing contamination and fuel loss. Compatible with McCormick C, CX, MC, MTX, X4, X5, X6, X7, and XTX series models, this OEM cap guarantees precise fitment and reliable performance, maintaining the integrity of your tractor's fuel system.