Sierra 18-5179 Ignition Coil for Johnson/Evinrude OutboardsSierra replacement ignition coil for Johnson/Evinrude Outboards. Sierra marine engine components are manufactured to meet or exceed OEM requirements. Used on most Johnson and Evinrude Outboard engines 4 to 300 HP 1985 - 1999.Interchangeable with: CDI; 183-2508; GLM; 72010; Johnson/Evinrude Outboard; 0582508; Mallory; 9-23107;