Swimables SW-21-150 WhisperFlo IntelliFlo Wet EndRestore Full Pump Performance Without Replacing the Motor When a pool pump begins leaking, losing prime, or showing signs of internal wear, the motor is often still perfectly functional. In these cases, replacing only the wet end is the most cost effective and professional repair. The Swimables SW 21 150 WhisperFlo IntelliFlo Style Pump Wet End 3 HP with Hi Temp Unions is designed to restore full hydraulic performance to compatible Pentair style pumps