Pentair 178546Z Replacement Filter Lid

The Pentair 178546Z is a direct-replacement lid designed for Pentair “Clean & Clear RP” cartridge filters with 150-sq-ft and 200-sq-ft media ratings.

Key Features

• Fits compatible cartridge filter tanks (150 sq ft & 200 sq ft) in the Clean & Clear RP series.
• Durable construction suitable for typical pool filtration operating conditions.
• Provides secure seal and proper alignment on the filter body to maintain performance and reduce leaks.

Technical Specifications

• Part Number: 178546Z
• Compatible Tank Media Sizes: 150 sq ft and 200 sq ft cartridge filter tanks
• Application: Filter lid replacement for the matching filter body

Installation & Fit Notes

Before installing the new lid, shut off the pump and release pressure from the filter tank. Remove the existing lid, inspect the tank rim and O-ring for wear or residue, clean the surfaces, install the new lid, ensure O-ring is properly seated, and restore circulation. After startup, verify that there are no leaks around the lid and that the filter functions normally.

Maintenance Tips

• Check the condition of the lid and O-ring yearly — if you notice cracking, warping or seepage it’s a good time to replace the lid or the O-ring.
• Keeping the filter lid in good condition helps maintain proper pressure and filter efficiency.
• For service inventory, stocking this lid ensures you’re ready for lid failures or brand-model tank replacements.

Why Choose This Lid?

For pool service professionals, equipment retailers or proactive homeowners, the Pentair 178546Z replacement lid offers a reliable, direct-fit solution to restore or maintain your cartridge filter system. It helps ensure the filter tank remains properly sealed, operating safely and delivering optimal flow and filtration.