The McCormick 6528392M91 is a genuine diesel tank cap supplied with a key, designed to secure the fuel tank on a wide range of agricultural tractors. This essential component features a 60mm diameter and weighs approximately 0.2 kg, ensuring a precise fit and reliable operation. It is compatible with numerous McCormick, Landini, and Massey Ferguson models, including CX, MC, MTX, XTX, ZTX series for McCormick; Legend, Powerfarm, Vision series for Landini; and 300, 400, 600, 3000, 4200, 4300, 6100, 6200, 8100, 8200 series for Massey Ferguson. This cap is also cross-referenced with OEM part numbers such as Massey Ferguson 3581177M91 and Valtra/Valmet V836657000.