Voltage Regulator Fits Massey Ferguson F40 MF135 MF150 MF165 MF175 MF180 MF25One New Aftermarket Replacement 12 Volt Voltage Regulator Fits Massey Ferguson Fits Massey Harris Models: 135, 150, 165, 175, 180, 25, 300, 35, 410, 50, 510, 65, 85, 88, F 40, FE 35, TO 35, 50, 202, 203, 204, 205, 2135, 3165, 90. 12 Volt, 4 Terminal. Mounting holes are 3 3 4" center to center. "L" is for Lights, "F" is for Fuel, "Bat" is for Battery, "Gen" is for Generator. Replaces Part Numbers: 182548M92, 376122R91, 21A616, 182548M1, ELP50 0005,