100% tested before shipping. Note: To make sure part can fit perfectly, please check item pictures, read item description, confirm compatibility chart and Part Number. Manufacturer Part Number: for Mercury 899883229 for Mercury 339-5287 for Mercury 339-6222 for Mercury 339-6222A1 for Mercury 339-6222A4 for Mercury 339-6222A6 for Mercury 339-6222A8 for Mercury 339-6222A10 899883229 339-5287 339-6222 339-6222A1 339-6222A4 339-6222A6 339-6222A8 339-6222A10 Replaces for Part# 18-5788 Replaces for Part# 9-25106 Replaces Part# 114-6222 Suitable for the following models: 1976-1980 4 2Cyl 40, 4, Gnat 5589202 - 5595531 1974- 7.5 2Cyl 75, 7.5 3801458 - 0A197111 1974- 9.8 2Cyl 110, 9.8 3795659 - 0A197111 1973-1976 20 2Cyl 20, 200 3537531 - 4709592 1977-1980 20 2Cyl 20, 200 4709593- 5837436 Color:As Shown Material:ABS Package Contents: 1 x CDI Switch Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.