New Voltage Regulator Fits Delco Generators 12V 2-Unit Type A-Circuit 1118981One New Aftermarket Replacement Voltage Regulator 12 Volts 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, Super 90. Tech Info: 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: Fits Massey Ferguson: 1825 48 M91,