By PureLine



Part # PL0148

Manufacturer Code CX850RE

Dimensions 9.25" L x 9.25" W x 14.1875" D

Alternate Part #'s 18503, C-9485, C9485, CX850RE, FC-1298, FC1298, PA85, XLS-905, 17-175-1329, PC1298, PLEPA85

Product Description


  • Our generic replacement cartridges are less expensive than the original manufacturers' brands yet still meet the same high quality standards.  The key components of a cartridge - filter media, core, and end cap - are all designed for maximum water flow and cartridge life.
  • The filter media is point bonded polyester with even fiber distribution which results in an even dirt load and increased water flow.  
  • The Sharp & Uniform pleated media provides filtration area (square footage) that meets or exceeds the original manufacturers' specifications.  
  • An open core design provides sturdy support for the media without restricting flow.  Increased flow rates result in less wear on the pump and reduced energy usage.  
  • Anti-microbial end caps inhibit the growth of bacteria, mold and mildew while supporting the core and media.
  • Banded Pleats maximize flow during operation, and help to reduce the frequency of cleaning.  Banded pleats also make the cartridge easier to clean.

Not Your Cartridge?

Is this not your Cartridge? Don't worry, we carry thousands of Pool Filter Replacement Cartridges to replace all of the most popular OEM brands such as Sta-Rite®, Pentair® / Pac Fab®, Hayward®, Purex®, American Products®, Jacuzzi®, Hot Springs®, Coleman®, and more. Click here for more Pool Filter Replacement Cartridges


All manufacturers’ names, brand names, trademarks, images, symbols, descriptions, and part numbers are used herein for reference purposes only.

You should consider the Microban® version of this filter!

Why Microban® Protection?

Water and an ample food source provide the ideal condition for bacteria to quickly multiply and grow. In fact, on an unprotected surface, some microbes can double in number every 20 minutes. And only when they’ve multiplied to hundreds of thousands, can they actually be seen by the naked eye.

The images below show bacteria growth on a standard pool filter cartridge versus a pool filter cartridge infused with Microban® antimicrobial protection over a 24 hour period.

Microban Pool Filter Cartridge

After viewing these images, you can see how Microban® protection begins to work immediately, disrupting key bacterial cell functions so that bacteria are unable to grow or reproduce on the surface. While on the unprotected surface, bacteria quickly multiply.

Top End Cap Top End Cap
Bottom End Cap Bottom End Cap

Product Specifications

Filter Model:
Hayward® ASL Full-Flo C-850
Filtration Area:
85 sq. ft.
14-3/16 in.
9-1/4 in.
Top Inside Diameter:
3 in.
Bottom Inside Diameter:
3 in.
Top Style:
Bottom Style:
Media Weight:
4 oz.
OEM #:
Unicel #:
Filbur #:
Pleatco #:

?     Asked on 6/13/2016by steve

Does this replace the c850 cartridge?

A  Answered on 6/14/2016 by InyoPools Product Specialist Alan M.

Yes this is the correct replacement cartridge for the C850 Hayward cartridge filter.

?     Asked on 7/27/2016by Rich

Can this filter be used to replace the Regenx filter #RGX55GE. If so, is there any reason to stay with a DE filter?

A  Answered on 7/28/2016 by InyoPools Product Specialist Scott W.

The replacement grid for that filter is part number RGX55GE. DE filters are going to be the best at filtering the water compared to sand or a cartridge filter.

?     Asked on 8/4/2016by Danuta Doucette

On 11/15/2013, the last time I bought from you Hayward C-800 Generic Cartridge (PA80) for $36.99. I would like to order yours but if CX 850 (PA85) could replaced (PA80) exactly with the same sizes (width & length),

A  Answered on 8/4/2016 by InyoPools Product Specialist Alan M.

Hello Danuta, The Hayward C-800 Generic Cartridge - NFC1280 is the correct replacement cartridge for the C-800 Hayward Filter.  The CX 850 will not fit and it has different dimensions.


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