Polaris Booster Pump Impeller
Item in stock and ships within 1 business day. The number one reason for impeller failure in the Polaris PB4-60 Pumps is due to pump running dry. Why would the pump run dry, you ask? The PB4-60 Booster Pump is only designed to operate when pool circulation pump is on. If pool circulation pump time clock and booster pump time clock get out of sequence, booster pump may turn on without circulation pump, causing it to run dry.