Upgraded 5oz CCP520 Pool Filter Cartridges 4-Pack - Premium 520 Sq.Ft

Our review of these upgraded 5oz CCP520 pool filter cartridges finds them best for pool owners who want a durable, higher-performance replacement for Pentair Clean & Clear Plus 520 style housings. The single biggest reason to buy is the heavier 5oz trilobal spunbond polyester media that traps finer particles down to about 10 microns and extends service intervals compared with standard 3oz cartridges, delivering noticeably clearer water with fewer cleanings.

Key Features

• Perfect Fit: Engineered for hydraulic alignment and leak-free sealing with housings compatible with Pentair Clean & Clear Plus 520 and Waterway Crystal Water 525/600, so installation is straightforward.
• Premium 5oz Media: Made with denser trilobal spunbond polyester, the heavier 5oz pleats deliver finer filtration and stronger pleat integrity for longer life and cleaner pool water.
• Expanded Filtration Area: Each cartridge provides about 130 sq.ft of media, adding up to 520 sq.ft in this 4-pack for better throughput and longer run times between cleanings.
• Durable Construction: Reinforced polypropylene core and bonded end caps resist collapse and allow repeated washing without losing shape.
• Reusable Savings: The washable 5oz pleats tolerate multiple cleanings and can be reused for up to 24 months, reducing replacement frequency and overall cost.
• Cross-Reference Compatibility: Replaces OEM part numbers such as 178585 and R173578 and cross-references Pleatco PCC130, Unicel C-7472, and Filbur FC-1978, simplifying part selection.

Who It's For

These cartridges suit backyard pool owners and maintenance pros who use filter housings compatible with Pentair Clean & Clear Plus 520 or Waterway Crystal Water 525/600 and want a cost-effective, longer-lasting replacement. The heavier 5oz media benefits pools that see frequent use, organic load, or fine debris because the finer filtration clears water faster and reduces labor.

Owners of very small filters, unusual housings, or those requiring an OEM-branded part may want to check original part numbers or source a manufacturer-labeled cartridge, since this product is a compatible replacement rather than an OEM item.

Pros & Cons

Pros

• Higher fiber density and 5oz media results in finer filtration and improved water clarity.
• Good value as a 4-pack delivering 520 sq.ft total filtration area, reducing per-cartridge cost.
• Durable core and bonded end caps stand up to repeated washing and handling.

Cons

• Not an OEM product, so buyers seeking original manufacturer packaging should consider that before purchase.

Specifications

Our Verdict

For most pool owners using Clean & Clear Plus 520-compatible housings, these upgraded 5oz CCP520 cartridges are a practical, cost-effective upgrade that delivers finer filtration, stronger pleats, and longer intervals between cleanings. They are particularly good value as a 4-pack and hold up well to repeated washing, though buyers seeking OEM-branded parts should note this is a compatible replacement.

Frequently Asked Questions

Will these fit my Clean & Clear Plus 520 housing?
Yes, they are engineered to fit housings compatible with Pentair Clean & Clear Plus 520 and Waterway Crystal Water 525/600 for proper hydraulic alignment and sealing.

How often should I clean the cartridges?
With 5oz media you can expect longer service intervals than 3oz cartridges; clean based on pressure rise or visible debris, and these pleats can be washed and reused for up to 24 months.

Are these OEM Pentair cartridges?
No, these are compatible replacement cartridges that cross-reference OEM part numbers like 178585 and R173578, but they are not branded OEM parts.