The McCormick 6528145M1 is a genuine OEM radiator cap designed to maintain the correct pressure of 0.9 bar within the cooling system of various McCormick CX, MC, MTX, and XTX series tractors. This essential component ensures optimal engine temperature regulation, preventing coolant loss and protecting against overheating. Also compatible with a wide range of Massey Ferguson tractor models, including the 3000, 4200, 4300, 5400, 6100, 6200, 6400, 7400, 8100, and 8200 series.