The 3677432M91 is a genuine OEM switch designed for a wide range of McCormick, Massey Ferguson, and Landini agricultural tractors. This essential electrical component ensures reliable operation across various tractor series, including Massey Ferguson 100, 200, 500, 600, 3000, 3100, 3600, 4200, 4300, 5300, 5400, 6100, 6200, 6400, 7400, 8100, 8200, 8400, 8600, 8700, and 9000 Series, as well as McCormick CX, MC, MTX, and XTX Series, and Landini Ghibli, Legend, Mythos, Powerfarm, and Vision Series. Weighing 0.05 kg with dimensions of 50.8mm x 50.8mm x 50.8mm, this switch is a direct replacement for the original part.