CDI for 1978-1992 Mercury 90HP

Plug-and-play aftermarket replacement CDI box for Mercury outboard motors from RM Stator. Refer to fitment guide for models.

Dimensions:

• Width: 79mm
• Length: 136mm
• Height: 26mm
• Fixation holes centre to centre: 143mm

Installation:

• If the Black Ground Wire is Not Already Connected to the CDI Box fasten to One of the 4 Mounting Holes on the Outside of the Box
• Fasten the Other End of This Black Wire to a Good Ground Spot on the Engine.
• If the Engine Uses an Orange Colored Lead That is Connected to the Box Connect This to the Black/Yellow Stud on the New Box.