Sierra 18-99173 Johnson Evinrude 1986-1990 60/70/75HP Power Pack Replaces CDI 113-2115This Sierra power pack is for use with Johnson/Evinrude outboard engines with no RPM limits.Sierra 18-99173 Power Pack Application InformationThis power pack is used in ignition systems on Johnson/Evinrude 60/70/75HP outboards from 1986-1990.What is the 18-99173 Power Pack Interchangeable with? CDI; 113-4489; 113-2115; Johnson/Evinrude; 583656; 583664; 583665; 583896; 583984; 584329; 584331; 584347; 584487; 584489; Click here for Sierra 18-99173 Power Pack Installation Instructions