This is the complete “wet end” of the jet pump. Your Wavemaster 9000 & 9200 (v.2), 2.5 HP jet pump is comprised of two main components: the electric motor and the “wet end”. In some cases, this entire “wet end kit” is needed. Perfect remedy if your “wet end” has cracked since neither the volute (attaches to the motor) or the volute cover (front of the pump) are available individually from the manufacturer. PLEASE NOTE: this wet end fits pumps with Vendor number “3536” on them.