Hayward Union Nut Connector SPX4000H | Northstar

The Hayward Union Nut Connector SPX4000H is a part of the Hayward Northstar Pump series. It is specifically a Union Nut Connector used in the assembly of the Hayward Northstar SP4000 series pool pump. This part goes with the Northstar SP4000 series (1998-2007) and is typically used with an O-ring (O-83), which is usually purchased separatel. Please note that when replacing parts for models prior to 2003, it’s recommended to purchase the impeller kit to ensure compatibility.