Waterway .75 HP Hi-Flo Side Discharge Spa Pump Impeller "B" (310-3990) valveparts Filter cartridge for compatible C-4440

Filter cartridge for compatible C-4440 and PSD40 spa and pool applications

Useful when original trap bodies are cracked or worn

higher-feature spa systems can lose some of the coordinated user access they depend on

That helps improve repair quality without turning a focused service job into a larger project than necessary

The SherLok 80 fit and 16-1/4 inch relationship give this part practical value because internal filter components work best when they match the original size and assembly relationship closely

Waterway .75 HP Hi-Flo Side Discharge Spa Pump Impeller "B" (310-3990) valveparts Filter cartridge for compatible C-4440The Waterway 310 3990 impeller is designed for compatible . 75 HP Hi Flo side discharge spa pump applications and is identified as the B version. An impeller like this is useful because it restores the working water moving element of the pump while maintaining compatibility with the original version specific design. Version specific pump parts matter because even similar horsepower ratings may not use the same impeller. This Waterway part is a strong