CDI Electronics 113-1731 Johnson/Evinrude Power Pack-4 Cyl (1973-1977) Johnson/Evinrude Power Pack Fits the following 1973-1977 4 cylinder engines: 85, 115, 135 and 140 HP Replaces part numbers: 581311, 581731, 581709, 582056, 581895 Check manufacturer's recommended part numbers to ensure a proper fit for your application