Replacement impeller for the Watkins Wavemaster 4000 jet pump This impeller screws onto the pump motor's threaded shaft with regular right-hand threads Please verify your pump's model number and vendor code when selecting replacement parts

This 1 0HP impeller is the after-market impeller used on the Wavemaster 4000 LX brand jet pumps This impeller screws onto the pump motor's threaded shaft with regular right-hand threads