Sierra 18-99222 2 Cyl Mercury Switch Box Replaces CDI 114-5713This Sierra switch box is for use with Mercury outboard engines.Sierra 18-99222 Switch Box Application InformationThis switch box is used in ignition systems on Mercury 6,8,9.9,10,15,20, & 25HP 2 Stroke Outboard motors built from 1997-2006 with 4 magnet flywheelsWhat is the 18-99222 Switch Box Interchangeable with? CDI; 114-5713; Mercury Marine; 855713A3; 855713A4; Click here for Sierra 18-99173 Power Pack Installation Instructions