Sierra 18-99236 Mercury Marine Outboard StatorSierra 18-9923616 amp, 3/4 cylinder component is designed for select Mercury 4-stroke EFI and carbureted outboard engines. It fits 20022008 30/50/60 HP 4-stroke EFI models and 20032005 25/30 HP 4-stroke engines. It serves as a direct replacement for Mercury part 398-878143T05 and CDI 174-0001.Key Features16 amp rating3/4 cylinder designFits Mercury 30/50/60 HP 4-stroke EFI (20022008)Fits 25/30 HP 4-stroke (20032005)Replaces Mercury 398-878143T05Replaces CDI 174-0001