The CDI Electronics 183-2366 Johnson/Evinrude Ignition Coil fits the following Cross Flow engines: 1977-1984 4 to 60 HP (2 cylinder), 1979-1984 65 to 70 HP (3 cylinder), 1978-1984 85 to 140 HP (4 cylinder), 1979-1984 150 to 235 HP (6 cylinder). Replaces part numbers: 581686, 584561, 582106, 581997, 581998, 581862, 582366, 582330.