Product Overview

Restore powerful filtration and clear pool water with the Pentair Clean & Clear 420 OEM/Original Cartridge Filter Replacement Kit, 4-Pack | 179135 & R173576. This genuine Pentair OEM cartridge kit includes four replacement filter elements designed for the Pentair Clean & Clear Plus 420 / CCP420 cartridge filter system.

Each cartridge provides 105 sq. ft. of filtration area, giving the complete 4-pack a total filtration area of 420 sq. ft. These original Pentair cartridges are designed to fit properly, maintain strong water flow, and help capture dirt, debris, and suspended particles as water passes through the filter.

This kit is ideal when existing cartridges are worn, damaged, clogged, difficult to clean, or no longer restoring proper flow after rinsing. Choosing the OEM replacement kit helps maintain the intended performance of your Clean & Clear Plus 420 filter.

Ideal For

• Pentair Clean & Clear Plus 420 / CCP420 cartridge filter owners
• Replacing a complete set of four filter cartridges
• Restoring filtration performance and water clarity
• Pools with rising filter pressure even after cleaning cartridges
• Cartridges that are worn, cracked, collapsed, stained, or damaged
• Pool owners who prefer genuine Pentair OEM replacement parts
• Pool service technicians and maintenance companies
• Seasonal filter maintenance and pool opening service

Specifications

Key Features

Genuine Pentair OEM Cartridge Kit

Manufactured by Pentair as an original replacement cartridge kit for compatible Clean & Clear Plus 420 filter systems.

Complete 4-Pack Replacement Set

Includes four matching cartridge elements, giving you the full replacement set required for the CCP420 filter.

420 Sq. Ft. Total Filtration Area

Each cartridge provides 105 sq. ft. of filtration area for a combined total of 420 sq. ft.

Designed for Clean & Clear Plus 420 Filters

Built to fit the Pentair Clean & Clear Plus 420 / CCP420 cartridge filter system with proper sizing and open-end configuration.

Helps Restore Water Flow

Fresh cartridges help improve water movement through the filter when old cartridges are clogged, worn, or no longer cleaning properly.

Supports Clearer Pool Water

Pleated cartridge media helps capture dirt, debris, and fine particles to support clean, clear pool and spa water.

OEM Fit and Performance

Using genuine Pentair replacement cartridges helps reduce issues caused by incorrect sizing, poor sealing, or mismatched aftermarket elements.

Benefits

Restores Original Filter Capacity

Replacing all four cartridges helps return the Clean & Clear Plus 420 filter to its intended 420 sq. ft. filtration capacity.

Improves Water Clarity

Clean, properly sized cartridges help trap debris and suspended particles that can make pool water cloudy.

Helps Lower Filter Pressure

Old or clogged cartridges can restrict flow and increase pressure. A new cartridge set can help restore normal operating flow when cartridges are the cause.

Reduces Maintenance Frustration

If cartridges no longer rinse clean or pressure rises quickly after cleaning, replacing the full set can make regular pool maintenance easier.

Protects Pool Equipment

Proper filtration helps support the pump, heater, sanitizer, and circulation system by reducing debris load in the water.

Better Long-Term Fit

OEM Pentair cartridges are made for the compatible filter system, helping ensure correct installation and reliable performance.

Customer-Facing Q&A

Q: What is the Pentair 179135 cartridge kit used for?

A: The Pentair 179135 kit is a genuine OEM 4-pack cartridge replacement set for the Pentair Clean & Clear Plus 420 / CCP420 cartridge filter.

Q: What is the SKU for this product?

A: The SKU is 179135.

Q: What is the replacement cartridge part number?

A: The individual cartridge replacement part number is R173576.

Q: What is the UPC / barcode?

A: The UPC / barcode is 788379886202.

Q: How many cartridges are included?

A: This kit includes 4 replacement cartridges.

Q: How many cartridges does the Clean & Clear Plus 420 filter require?

A: The Clean & Clear Plus 420 filter uses 4 cartridges.

Q: What is the total filtration area?

A: The full kit provides 420 sq. ft. of total filtration area.

Q: What is the square footage per cartridge?

A: Each cartridge provides 105 sq. ft. of filtration area.

Q: What are the cartridge dimensions?

A: Each cartridge is commonly listed as 7" diameter x 26-1/4" length with 3" open top and 3" open bottom.

Q: Is this an OEM Pentair product?

A: Yes. This listing is for a genuine Pentair OEM/original cartridge replacement kit.

Q: Will this fit the Clean & Clear Plus 420?

A: Yes. This kit is designed for the Pentair Clean & Clear Plus 420 / CCP420 filter. It is commonly listed for filters manufactured after 11/1998. Always verify your filter model and cartridge dimensions before ordering.

Q: Is this the same as R173576?

A: R173576 is the individual cartridge element used for the Clean & Clear Plus 420 filter. The 179135 kit includes the complete 4-cartridge set.

Q: When should I replace my cartridges?

A: Replace cartridges when they are cracked, flattened, collapsed, torn, difficult to clean, causing high pressure, or no longer restoring water clarity after cleaning.

Q: Can I replace only one cartridge?

A: For best performance, it is recommended to replace all four cartridges together so the filter set has even flow, matching wear, and consistent filtration.

Installation Notes

• Turn off the pump and relieve all filter pressure before opening the filter tank.
• Follow all Pentair filter safety instructions before servicing the cartridge filter.
• Remove the old cartridges and rinse out debris from the filter tank.
• Inspect the manifold, air bleed assembly, tank O-ring, clamp, and internal components.
• Install all four replacement cartridges evenly into the filter.
• Make sure cartridges are seated properly before reinstalling the lid.
• Reassemble the filter according to the manufacturer’s instructions.
• Restart the system and check for leaks, proper pressure, and normal water flow.
• Record the clean starting pressure after installation for future maintenance reference.