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1-Pack Excel Filters XLS-800 replacement filter cartridge for Hayward Star Clear Plus C900 and Waterway Clearwater II 100
1-Pack Excel Filters XLS-800 replacement filter cartridge for Hayward Star Clear Plus C900 and Waterway Clearwater II 100 — view 2
1-Pack Excel Filters XLS-800 replacement filter cartridge for Hayward Star Clear Plus C900 and Waterway Clearwater II 100 — view 3
Cutaway diagram of an Excel Filters cartridge labelling its Cleanguard ultra-efficient media, optimal-flow engineered core, secure fit banding and durable end caps
Six-step illustrated guide to cleaning a pool filter cartridge: switch off the pump and release pressure, remove the cartridge, rinse it with a garden hose, flip it over and repeat, refit it in the housing, then enjoy the pool
A child floating with a kickboard in a clean swimming pool, above the line "Excel Filters replacement cartridges clean your pool and spa"
A golden retriever swimming underwater in a clear blue pool, above the line "Cleaner, clearer water. That’s how we Excel."
1-Pack 01 / 07
Hayward® CompatiblePool and Spa Filter

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

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 40 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 Star-Clear Plus C900, Hayward XStream CC1000, Waterway Clearwater II 100.
  • Your old part number — CX900RE, ULTRA-B6, C-8409, FC-1292, 817-0100P. See all 39 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®

The XLS-800 is a replacement cartridge for the Hayward Star-Clear Plus C900, Waterway Clearwater II 100, Sta-Rite Posi-Clear PXC95 and Hayward XStream CC1000, plus 2 more filters listed under Compatibility. It replaces Hayward CX900RE / CCX1000RE, Waterway 817-0100P, Sta-Rite 25230-0095S and Harmsco H-8409, along with aftermarket Pleatco ULTRA-B6 / PA90, Unicel C-8409 / C-8409RA and Filbur FC-1292 / FC-1292M.

Each cartridge is 8 15/16" in diameter and 17 3/8" long with a 4" open end cap top and bottom, and carries 150 sq ft of filter media.

We make every cartridge in Austin, Texas, and shipping is free.

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
Filtration area per cartridge
150 ft²
Total filtration area
150 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 Star-Clear Plus C900Hayward XStream CC1000
Waterway™ Housings
Waterway Clearwater II 100Waterway ProClean 100Waterway Proclean Inground pool 150 (short version)
Sta-Rite® Housings
Sta-Rite Posi-Clear PXC95

Replaces These Part Numbers

OEM and competitor cartridge part numbers this product replaces

Hayward®
Waterway™
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.

Can't find your part number? Look it up on the full pool filter cartridge cross-reference chart.

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. Aftermarket equivalents: Pleatco PA90, Unicel C-8409 and Filbur FC-1292.

Which filter systems does the XLS-800 fit?

It fits the Hayward StarClear Plus C900, Hayward XStream CC1000, Waterway ClearWater II 100, Waterway ProClean 100, Waterway ProClean Inground pool 150 (short version) and Sta-Rite Posi-Clear PXC95. 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, 150 ft² of media (end caps — top: 4" Open End, bottom: 4" Open End). Matching measurements alone do not prove a fit: some of our cartridges share a size and differ in filtration area or end caps, so check the part number on your old cartridge too.

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.

Other sizes in this family

If your housing is a different model

All Hayward Star-Clear Replacement Filter Cartridges →
Back to all filters

*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.

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