Description:

The ROP Shop replacement (2-Pack) SWITCH BOX CDI Power Pack for Sierra 18-5775, 185775, 18-5778, 185778. Specs - Refer to images 2 & 3 for more information. Includes - (2) Switch Box CDI Power Packs; comes as shown in the first image. Fits many 4 & 8 cylinder Mercury outboards and many 2-cycle Mariner outboards 50HP to 225HP using ADI (alternator driven ignition) ONLY.