The bore pump must me centralised inside the shroud.
A centraliser prevents the motor end of the pump from touching the shroud or sleeve sides. This ensures even water flow around the motor preventing overheating.
Pump Centralisers are available here.
We currently have two types, a 120mm Centraliser for 4″ STD Motor and a 120mm Centraliser for 4″ High Thrust Motors.
120mm Stainless Steel Shroud Centraliser for 4 Inch High Thrust Bore Pump Motor