Hydro-Quip 4.0kW [17" x 2"] M7 L-Shape Flo-Thru Heater [PS-B Series] (48-PSL40-SB) switches An impeller like this is

An impeller like this is useful because it is the primary hydraulic component responsible for moving water through the pump

The white finish keeps the visible result bright and easy to integrate into many spa interiors

and long service life in spa or bath applications

Useful when the original pump is weak or no longer operating correctly

This replacement is especially useful when the original base is cracked

Hydro-Quip 4.0kW [17" x 2"] M7 L-Shape Flo-Thru Heater [PS-B Series] (48-PSL40-SB) switches An impeller like this isThe Hydro Quip 4. 0 kW M7 Flo Thru heater is designed for compatible PS B Series applications where an L shape 230 volt heater with a 24 inch cord is required. An L shape heater is useful because it supports installations where a standard straight body heater may not fit the supported plumbing and equipment layout as cleanly. This version is especially useful when the original system is built around the L shape format and the shorter 24 inch cord