Hayward CompatiblePool and Spa Filter

Excel Filters XLS-800 Replacement Filter Cartridge for Hayward Star Clear Plus C900 and Waterway Clearwater II 100 — 1-Pack

Compatible Replacement for Hayward CX900RE. Cross-References Pleatco PA90, Unicel C-8409 and Filbur FC-1292.

Made in the USA by Excel Filters

SKU XLS-800 1PACK · UPC 810625026183

$79.99 Single Cartridge
Free shipping. Tax calculated at checkout.
In stock 42 cartridges ready to ship from Austin

30-day returns.

  • Perfect Fit Guarantee*On listed part numbers
  • Free Standard Shipping*Every order, no minimum.
  • 6-Month Warranty*Covers manufacturing defects

Confirm your fit

  • Your housing — Hayward StarClear Plus C900, Sta-Rite Posi-Clear PXC-95.
  • Your old part number — CX900RE, 25230-0095S, H-8409, PA90, PA90-M. See all 17 compatible parts →
  • Your measurement — 8 15/16" diameter, 17 3/8" height, 4" Open End caps top and bottom.
Overview

Built to OEM Spec, Engineered to Clean®

Built to OEM dimensions for Hayward Star Clear Plus C900, CX900RE, and Sta-Rite Posi-Clear PXC-95 cartridge filter systems, this replacement matches the original cartridge geometry, end-cap style, and media surface area — without the OEM markup. It directly replaces aftermarket Pleatco PA90, Unicel C-8409, and Filbur FC-1292 part numbers — the full cross-reference list is in the Compatibility tab. Every cartridge is manufactured in our Austin, TX facility, ships free, and is backed by the Excel Filters Perfect Fit Guarantee on its listed cross-references.

The XLS-800 replacement cartridge is engineered for Hayward and built for dependable day-to-day filtration performance. Each cartridge is sized at 8 15/16" diameter x 17 3/8" length, with 4" ID w/ Gasket top and 4" ID w/ Gasket bottom end caps for direct-fit installation with no housing modifications.

Specifications

Measure once. Order with confidence.

Measure your old cartridge cap to cap, then across the widest pleat.

How to measure a cartridge →
Outer diameter
8 15/16"
Overall length
17 3/8"
Top end cap
4" Open End
Bottom end cap
4" Open End
Media per cartridge
90 ft²
Total media
90 ft²

Measuring your old cartridge

  • Length — cap to cap, with both end caps included.
  • Diameter — across the widest point of the pleats, not the end cap.
  • End caps — whether each end is open or closed, and the size of any opening.

A variance of ⅛" is normal. Anything larger usually means a different housing model — check the number printed on your old cartridge against the compatible parts list before ordering.

Cross-reference

Check compatibility by system or part number

Match your filter housing below, click any part number to verify the fit, or paste your existing part number into the search box.

Fits These Systems

Filter housings and systems this cartridge fits

Hayward® Housings
Hayward StarClear Plus C900
Sta-Rite® Housings
Sta-Rite Posi-Clear PXC-95

Replaces These Part Numbers

OEM and competitor cartridge part numbers this product replaces

Hayward®
Sta-Rite®
Harmsco®
Pleatco
Unicel
Filbur
Other Part #s This Replaces

The Perfect Fit Guarantee applies to the cross-references listed here. Brand names, models and part numbers identify compatibility only. If your housing is not listed, reach out to our team before ordering.

Reviews

What pool pros and homeowners are saying

Need help fitting?

Not sure if this fits your housing?

Enter your current cartridge's part number, your housing model, or a competitor number — we'll check it against this filter and the full catalog.

Questions

Fit, replacement & ordering

Still unsure after reading these? Send us the number stamped on your old cartridge and we will confirm the fit.

What part numbers does the XLS-800 replace?

The Excel Filters XLS-800 replaces Hayward CX900RE, and aftermarket equivalents Pleatco PA90, Unicel C-8409, Filbur FC-1292.

Which filter systems does the XLS-800 fit?

It fits Hayward StarClear Plus C900; Sta-Rite Posi-Clear PXC-95; Waterway Clearwater II 100, Waterway ProClean 100. If your housing is not listed, match the part number stamped on your current cartridge on our cross-reference chart.

What are the dimensions of the XLS-800 cartridge?

8 15/16" diameter, 17 3/8" long, 90 ft² of media (end caps — top: 4" Open End, bottom: 4" Open End). Measure your old cartridge before ordering if you are unsure of the part number.

Is this a genuine Hayward part?

No. The XLS-800 is an independently manufactured replacement cartridge, made in the USA by Excel Filters and built to match the Hayward CX900RE specification. Hayward is a trademark of its owner, used only to show compatibility.

How often should the XLS-800 be replaced?

Most pool and spa cartridges last 1–2 seasons with regular rinsing. Replace it when cleaning no longer restores flow, the pleats fray, or the end caps crack.

*Perfect Fit Guarantee applies to the OEM and aftermarket cross-references listed on this page; brand names, models and part numbers identify compatibility only. We ship to the 48 contiguous United States only; free standard shipping applies to those orders with no order minimum, and expedited service is priced at checkout. Every cartridge carries a 6-month limited warranty against defects in materials and manufacturing, separate from our 30-day return policy.