The McCormick 3540081M91 is a genuine OEM carbon brush designed for use in a wide range of agricultural machinery. This essential electrical component ensures proper function in starters or alternators across numerous McCormick CX series, Massey Ferguson, Landini, Valmet, and Valtra tractor models. It measures 22.86 mm in length, 15.24 mm in width, and 5.08 mm in height, with a weight of approximately 0.023 kg. This part is also cross-referenced as Massey Ferguson 3540081M1.