Pentair/PacFab Challenger 2.0HP Diffuser (355094) poolvergnuegen and this Filbur FC-3753 cartridge

and this Filbur FC-3753 cartridge is designed for C-4313 and PBW4PAIR applications

and this Maytronics Dolphin version uses the 9995431-ASSY reference

Once installed in the right Clim8Zone setup

A kit like this is useful because it provides the related connection parts together

That makes the repair focused and efficient

Pentair/PacFab Challenger 2.0HP Diffuser (355094) poolvergnuegen and this Filbur FC-3753 cartridgeThe Pentair PacFab 355094 diffuser is designed for compatible Challenger 2. 0 HP pump applications where the diffuser needs replacement. A diffuser like this is useful because it helps stabilize and direct water flow around the impeller area, making it an important part of the pumps hydraulic efficiency. Replacement is often needed when the original diffuser is cracked, worn, or no longer fitting correctly after service. Installing the correct Pentair