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1-Pack Excel Filters XLS-931 replacement filter cartridge for Pentair Clean & Clear 125 and Predator 125
1-Pack Excel Filters XLS-931 replacement filter cartridge for Pentair Clean & Clear 125 and Predator 125 — view 2
1-Pack Excel Filters XLS-931 replacement filter cartridge for Pentair Clean & Clear 125 and Predator 125 — view 3
Excel Filters sizing chart for Predator and Pentair Clean & Clear housings, comparing XLS-902, XLS-903, XLS-931, XLS-908 and XLS-904 by square footage, height and diameter
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
1-Pack Excel Filters XLS-931 replacement filter cartridge for Pentair Clean & Clear 125 and Predator 125 — view 4
A golden retriever swimming underwater in a clear blue pool, above the line "Cleaner, clearer water. That’s how we Excel."
1-Pack 01 / 08
Pentair® CompatiblePool Filter

Excel Filters XLS-931 Replacement Filter Cartridge for Pentair Clean & Clear 125 and Predator 125 — 1-Pack

Compatible Replacement for Pentair 173200. Cross-References Pleatco PAP118, Unicel C-9412 and Filbur FC-0696.

Made in the USA by Excel Filters

SKU XLS-931 1PACK · UPC 810625023861

$84.99 Single Cartridge
Free shipping. Tax calculated at checkout.
In stock 55 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 — Pentair Clean & Clear CC125 / Predator 125, Pentair Clean & Clear CC100 and Predator 100 tanks fitted with the 125 sq. ft. upgrade element.
  • Your old part number — 173200, ULTRA-C3, C-9410, FC-0696, R178671. See all 15 compatible parts →
  • Your measurement — 10 1/16" diameter, 23 5/8" height, Open End caps top and bottom.

Overview

Built to OEM Spec, Engineered to Clean®

The XLS-931 is a replacement cartridge for the Pentair Clean & Clear CC125 / Predator 125 and Pentair Clean & Clear CC100 and Predator 100 tanks fitted with the 125 sq. ft. upgrade element. It replaces Pentair 173200 / R178671, along with aftermarket Pleatco ULTRA-C3 / PAP118, Unicel C-9410 / C-9412 and Filbur FC-0696.

Each cartridge is 10 1/16" in diameter and 23 5/8" long with open end cap top and bottom, and carries 126 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
10 1/16"
Overall length
23 5/8"
Top end cap
Open End
Bottom end cap
Open End
Filtration area per cartridge
126 ft²
Total filtration area
126 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

Pentair® Housings
Pentair Clean & Clear CC125 / Predator 125Pentair Clean & Clear CC100 and Predator 100 tanks fitted with the 125 sq. ft. upgrade element

Replaces These Part Numbers

OEM and competitor cartridge part numbers this product replaces

Pentair®
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.

How do I check that this cartridge fits?

Find the part number printed on your old cartridge in the Compatibility tab. If you cannot read it, measure the outside diameter and the length, check both end caps, and compare them with the Specifications tab. A difference of about 1/8 inch is normal; more than that usually means a different filter model. Matching measurements alone do not prove a fit: some of our cartridges share a size and differ in filtration area or end caps.

Which part numbers does this cartridge replace?

It replaces 173200, ULTRA-C3, C-9410, FC-0696, R178671, Aladdin 22510, Darlly 81255 and OnCore OC-J23B. The Compatibility tab lists the rest.

Which filters does this cartridge fit?

It fits the Pentair Clean & Clear CC125 / Predator 125 and Pentair Clean & Clear CC100 and Predator 100 tanks fitted with the 125 sq. ft. upgrade element. Check the model on your filter tank before you order.

Is this a genuine Pentair part?

No. Excel Filters makes this cartridge in Austin, Texas. It is not made, sold or endorsed by Pentair; we use the name only to show which filters it fits.

How often should I replace my filter cartridge?

Most pool and spa cartridges last one to two seasons, depending on how much the water is used and its chemistry. Rinse the cartridge monthly during heavy use, and replace it when cleaning no longer brings the flow back or the pleats show wear.

What if it does not fit?

First check the part number on your old cartridge against the Compatibility tab: most fit problems come from ordering for a different filter model. If you still have a question, call us at (888) 532-2801 and we will help you find the right cartridge, before or after you order. Returns follow our standard return policy.

Related cartridges

If your housing is a different model

All Pool and Spa Filters →
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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