Switch Box Fit for Mercury 45 50 55 60HP 18-5791 19052A1 19052A2 19052A3 19052A5Part Name: CDI Switch Box Manufacturing Part Number: 19052 A1, 19052 A2, 19052 A3, 19052 A5, 19052 A6, 19052 A8, 18 5791, 114 9052 Application: Fit for Mercury 45 HP model Jet 3 cylinder engines from 1991 to 1999 with serial number range D000750 0G589999; Fit for Mercury 50 HP 3 cylinder engines from 1991 to 1997 with serial number range 0D000750 0G589999; Fit for Mercury 55 HP 3 cylinder engines from 1992 to 1997 with serial number range 0D000750