Waterway™ CompatiblePool and Spa Filter

Waterway ProClean 125, 150, 175 and 200 (Long) Replacement Filter Cartridge, 1-Pack — Excel Filters XLS-803

Compatible Replacement for Waterway 817-0200P, 817-0175P, 817-0150P and 817-0125P. Cross-References Pleatco PA175, Unicel C-8420 and Filbur FC-1263.

Made in the USA by Excel Filters

SKU XLS-803 1PACK · UPC 810625020617

$96.99 Single Cartridge
Free shipping. Tax calculated at checkout.
In stock 13 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 — Waterway ProClean 125 (long 28 3/16 in), Waterway ProClean 150 (long 28 3/16 in), Waterway ProClean 175 (long 28 3/16 in).
  • Your old part number — 817-0125P, ULTRA-B4, C-8417, FC-1294, H-8417. See all 45 compatible parts →
  • Your measurement — 8 15/16" diameter, 28 3/16" height, 4" ID w/ Molded Gasket caps top and bottom.

Also fits: Hayward Star-Clear Plus C1750 →Sta-Rite Posi-Clear PXC125 / Posi-Clear PXC150

Overview

Built to OEM Spec, Engineered to Clean®

The XLS-803 is a replacement cartridge for the Waterway ProClean 125, 150, 175 and 200 (Long). It replaces Waterway 817-0200P, 817-0175P, 817-0150P and 817-0125P, along with aftermarket Pleatco PA175, Unicel C-8420 and Filbur FC-1263.

Each cartridge is 8 15/16" in diameter and 28 3/16" long with 4" ID w/ Molded Gasket end caps top and bottom, and carries 200 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
28 3/16"
Top end cap
4" ID w/ Molded Gasket
Bottom end cap
4" ID w/ Molded Gasket
Filtration area per cartridge
200 ft²
Total filtration area
200 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

Waterway™ Housings
Waterway ProClean 125 (long 28 3/16 in)Waterway ProClean 150 (long 28 3/16 in)Waterway ProClean 175 (long 28 3/16 in)Waterway ProClean 200 (long 28 3/16 in)

Replaces These Part Numbers

OEM and competitor cartridge part numbers this product replaces

Waterway™
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-803 replace on the Waterway ProClean 125, 150, 175 and 200 (Long)?

The Excel Filters XLS-803 replaces Waterway 817-0200P, 817-0175P, 817-0150P and 817-0125P. Aftermarket equivalents: Pleatco PA175, Unicel C-8420 and Filbur FC-1263.

What are the dimensions of the XLS-803 cartridge?

8 15/16" diameter, 28 3/16" long, 200 sq ft of filter media. Both end caps: 4" ID w/ Molded Gasket. Measure your old cartridge before ordering if you are unsure of the part number.

Is this a genuine Waterway part?

No. The XLS-803 is an independently manufactured replacement cartridge, made in the USA by Excel Filters and built to match the Waterway 817-0200P specification. Waterway is a trademark of its owner, used only to show compatibility.

How often should the XLS-803 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.

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