Pentair Clean & Clear Plus 520 Replacement Filter Cartridge Element (130 Sq Ft) | R173578
The Pentair R173578 is an OEM replacement cartridge element for the Pentair Clean & Clear Plus 520 cartridge filter
(often labeled CCP520). Each R173578 cartridge provides approximately 130 sq ft of filtration area, and a
complete CCP520 set uses four cartridges (totaling 520 sq ft). Replacing worn or clogged cartridges helps
restore flow, reduce pressure, and improve overall water clarity.
Compatibility
- Fits: Pentair Clean & Clear Plus 520 cartridge filters (CCP520)
- System requirement: 4 cartridges required for a full replacement set (520 sq ft total)
- Note: Commonly specified for Clean & Clear Plus 520 units manufactured after approximately 11/1998
Key Features
- OEM Pentair cartridge element designed for proper fit and sealing in CCP520 filters
- High surface area (about 130 sq ft per cartridge) to capture fine debris
- Helps restore performance when pressure rises or circulation weakens
- Service-friendly for rinse cleaning and periodic deep cleaning
Specifications
- Brand: Pentair
- Part Number: R173578
- Filter Type: Cartridge element (single)
- Filtration Area: 130 sq ft (per cartridge)
- Used In: 520 sq ft system (4 cartridges total)
- Approx. Dimensions: 7″ diameter x 32-1/16″ length
- Center Hole: 3″ (open both ends, typical CCP520 style)
- UPC: 788379502195
- Quantity: Sold individually
When to Replace
- Filter pressure rises quickly after cleaning (media is worn or permanently loaded)
- Visible tears, loose end caps, cracked bands, or deformed pleats
- Pleats wont rinse clean or remain gray/oily after deep cleaning
- Cloudy water persists despite correct chemistry and run time
Installation Notes
- Shut off the pump and relieve pressure at the air-relief valve before opening the filter.
- Remove and replace cartridges one-by-one to keep orientation consistent.
- Inspect and clean the manifold and tank interior; debris left behind can re-clog new cartridges.
- Confirm cartridges seat fully on the bottom manifold and align properly with the top manifold.
- After reassembly, open the air relief and restart the pump until all air is purged, then close the relief.
Related Products
- Search Aqua Pool Supply for R173578
- Clean & Clear Plus 520 parts
- Cartridge filter cleaners
- Filter O-rings and seals
Maintenance Tips
- Rinse cartridges from top to bottom with a high-pressure nozzle to flush debris out of the pleats.
- For oils/lotions, soak in a cartridge cleaner (or mild degreaser solution) before final rinsing.
- Rotate between two cartridge sets when possible to reduce downtime and extend service life.
- Record clean filter pressure after installationuse it as your baseline for future cleanings.
