Description:

CDI Box fits For Mercury Outboard 2 Cyl 6-35 Hp 18-5778. The only way to check your CDI box is to rule everything else out before replacing the CDI box and swap it out with the good unit from the same year/make/model. Tip: We always suggest taking photos of your OEM parts before uninstalling them so that you may install your parts in the same way.