Pentair Challenger High Pressure 3.0 HP Diffuser (355545Z) spafilters and this Magic Plastics UniBody

and this Magic Plastics UniBody version features a 2 inch union by 2 inch slip configuration with a 100 psi rating using the 0516-20 reference

Filter cartridge for compatible applications using FC-2790

An aligning rod is useful because it helps keep related filter parts positioned correctly

It is commonly replaced when the original collar becomes cracked

A gasket like this is useful because it helps create the seal between related niche or lighting components while matching the required bolt or screw pattern

Pentair Challenger High Pressure 3.0 HP Diffuser (355545Z) spafilters and this Magic Plastics UniBodyHigh pressure Challenger systems need a diffuser that supports the correct internal pressure and flow characteristics. This 3. 0 HP Pentair diffuser is intended for compatible high pressure Challenger configurations and helps maintain the wet end geometry needed for efficient operation. Choose it when servicing a pump that has lost performance due to internal part wear, breakage, or improper previous repair. Made for select 3. 0 HP high pressure