The CDI Electronics 193-5204 Johnson/Evinrude Voltage Regulator fits the following engines: 1984-1991 150, 155, 175, 185 and 235 HP (6 cylinder), 1992 110, 115 and 140 HP (4 cylinder with 35 Amp upgrade). Replaces part numbers: 583076, 582904, 584423, 583268, 395204, 395391, 878335.