Pleatco Ultra-A1-PAK4 Cartridge – Fits C4000 Series & Replaces CX570XRE & CX580XRE | ULTRA-A1-PAK4

Pleatco Ultra-A1-PAK4 Cartridge

Fits Hayward C4000–C4030 and C4500 series; replaces CX570XRE and CX580XRE. PurePleat, Point-Bonded fabric, and Free-Flow Core for efficient, durable filtration.

Features

• Compatible with Hayward C4000, C4000S, C4020, C4025, C4030, C4500, C4520
• Replaces CX570XRE and CX580XRE filter cartridges
• PurePleat design maintains pleat integrity and maximizes media area
• Point-Bonded media ensures stable, even contaminant capture
• Free-Flow Core enhances water flow, decreases pressure, and extends cycle time

Description

The Pleatco Ultra-A1-PAK4 cartridge is a durable, high-performance replacement for several Hayward tank filters. It fits multiple models—from C4000 to C4520—and replaces older CX570XRE and CX580XRE filters. With PurePleat technology to eliminate pleat bunching, Point-Bonded media for consistent filtering, and a Free-Flow Core to reduce system strain, this cartridge delivers lasting clarity and efficiency.

Pro Tip

Use a low-pressure rinse monthly to protect pleat structure. Check o-rings on installation for proper fitting and seal.

Installation Tips

Ensure cartridge fits OEM dimensions before installing. Use only low-pressure water for cleaning to avoid damaging media. Lubricate o-rings for accurate sealing.

We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:

• Pentair Warranty
  
• A&A (Pentair In-Floor) Warranty
  
• Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
  
• Paramount Warranty
  
• BlueSquare Warranty
  
• Hayward Warranty
  
• All Other Manufacturer Warranties
  

Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.