Johnson Pump Impeller For Pumps 10242773Remember that the impeller should be replaced every year with a Johnson Pump Brand original impeller. Then you'll know that it matches your pump exactly. Remove the impeller with a slip joint plier or an Impuller. Take good care of the cooling system change to a new impeller every year! Dia. : 2. 56" Blades : 8 Pump Model # : 102457251, 10242773, 1022342, 10223541