Pentair Challenger Pump Seal Plate

This seal plate is designed specifically for Pentair/PacFab Challenger pumps. You should verify your pump model number against the part numbers 355303 or 355004 to ensure an exact match before purchasing.

This is a genuine Pentair replacement part. Using authentic components ensures the precise fit and material quality required to maintain your pump's structural integrity.

You likely need a replacement if you notice persistent leaking around the pump housing, visible cracks in the plate, or if the seal plate has become warped due to heat or age. These issues can compromise your pump's pressure and overall filtration efficiency.

While the seal plate is the core component, it is standard practice to replace the shaft seal and any associated O-rings or gaskets at the same time. Installing fresh seals ensures you get a watertight fit and prevents the need to disassemble the pump again shortly after.

If you are comfortable with basic pool equipment maintenance, this is a manageable DIY project. However, it requires disassembling the pump housing, so ensure you have the correct tools and are comfortable working with pool plumbing before starting.