Re: Impeller and Water pump kits
A waterpump is comprised of the base housing, wearplate, impeller and upper housing, along with gaskets and seals. We normally replae just the worn parts, which is usually the impeller, gaskets, wearplate and an oring seal. You should inspect the upper housing for wear. If none, it is reusable. If the gearcase is leaking water, replace the base housing or replace just the base oring.