Mallory Impeller 9-45375

Its an impeller. There is not a lot else to say. The impeller fit perfectly in each of the Merc 5L Bravo II engines in my Summerset Houseboat. I replace these every year now as I have personal experience with the alternative of both impellers disintegrating on me while out on the lake. The engines stop and things then get ugly, especially when its in a storm!!! It takes about an hour per engine and the engines run perfectly all summer. Its lots better to replace the impellers at the beginning of the season rather than the end of the last season as they stay more flexible.