Pentair Strainer Pot Lid | Challenger High Flow Pump | 355301Z

The Pentair 355301Z is the OEM replacement strainer pot lid for the Challenger High Flow pump series. This is the direct-fit cover for the pump's strainer basket housing, restoring a watertight seal to the strainer pot.

The strainer pot lid seals the basket housing on the suction side of the pump. A cracked, warped, or poorly sealing lid allows air to enter the system, causing the pump to lose prime and run dry. Replacing a damaged lid restores the airtight seal required for consistent priming and protects the pump from running without water flow.

Specifications

Fits Into

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

When replacing the strainer pot lid, inspect the lid O-ring at the same time. A lid that seals correctly but has a worn or flattened O-ring will still allow air ingestion and priming loss. Replace the O-ring if it shows any cracking, flattening, or deformation — and confirm the replacement O-ring part number against your pump's parts diagram before ordering.