Pentair Diffuser, 2F Frame, 2-1/2A | Challenger High Flow Pump | 355094Z Water Levelers A failed or compressed gasket

A failed or compressed gasket allows water to enter the light housing

The Unicel PG-1905 is a single partial DE filter grid engineered for 60 square foot DE filter systems

Filter Area 27

match it to 85017800 to confirm fitment

Pentair Diffuser, 2F Frame, 2-1/2A | Challenger High Flow Pump | 355094Z Water Levelers A failed or compressed gasketThe Pentair 355094Z is the OEM replacement diffuser for the 2F frame, 2 1 2A configuration of the Challenger High Flow pump series. The diffuser channels water from the impeller into the pump's volute, converting velocity into pressure to maintain consistent flow through your pool or spa system. A cracked, warped, or worn diffuser reduces hydraulic efficiency and can cause the pump to lose prime or deliver reduced flow. Replacing it with the correct