Weil Mclain 511-405-143 Cartridge Circulator Pump

This is a cartridge circulator pump from Weil Mclain, used to circulate water through a boiler or hydronic heating system. The cartridge design houses the pump's wet end for straightforward servicing without disturbing the motor or piping connections. This is a genuine Weil Mclain replacement part.

Confirm this part number matches your equipment's parts list before ordering.