Feature:1. Replacement Part Number: 339 7452A1, 339 7452A7, 339 7452A8, 339 7452A9, 339 7452A10, 339 7452A11, 339 7452A14, 339 7452A15, 339 7452A18, 339 7452A19, 339 7452A20, 339 7452A21 etc.2. Applicable Model: Replacement for sierra marine 18 5777, 18 5778 Replacement for Mallory Marine 9 25102. Fit for 635HP 2 Cylinder outboard motor.3. Ideal Replacement: Directly replace the old and damaged ones, improve the ignition and start performance, and restore to a new working state.4. High Quality: Designed for use in a marine environment, restarting the engine in a short time, saving you time and money.5. Plug and Play: Appearance and function conform to the original CDI standard, easy installation, stable performance and long term durability.Specification:Item Type: CDI BoxMaterial: ABSReplacement Part Number: 339 7452A1, 339 7452A7, 339 7452A8, 339 7452A9, 339 7452A10, 339 7452A11, 339 7452A14, 339 7452A15, 339 7452A18, 339 7452A19, 339 7452A20, 339 7452A21Replacement for cdi electronics: 114 7452K1Replacement for sierra marine: 18 5777, 18 5778Replacement for Mallory Marine: 9 25102Fitment:1986-1998 for 6hp 2cylinder 0A197112 0G7602991986-1998 for 8hp 2cylinder 0A197112 0G7602991986-1998 for 9.9hp 2cylinder 0A197112 0G7602991986-1998 for 10hp 2cylinder 0D038000 0G7602991988-1998 for 15hp 2cylinder 0B292414 0G7602991986-1994 for 20hp 2cylinder 6443973 0G0440261996-1997 for 20hp 2cylinder SeaPro 0G438000 0G7602991984-1993 for 25hp 2cylinder 6443973 0G0443651996-1997 for 25hp SeaPro 0G438000 0G7602991984-1989 for 35hp 2cylinder 6445653 0B393190.Package List:1 x CDI BoxNote:1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!