Unfortunately Seadoo originally designed their Supercharger with ceramic washers. These washers are the leading cause of 4 tec engine failures and need to be replaced immediately or engine failure will occur. Furthermore, Seadoo recommends a complete rebuild of the Supercharger at every 100 hour interval. We provide both metal washer replacement and complete Supercharger rebuilds. Let an experienced technician rebuild these crutial components. If not done correctly there is a high likelyhood the Supercharger will fail resulting in engine failure.