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1-Pack Excel Filters XLS-418 replacement filter cartridge for Pentair/Rainbow Dynamic 35, Sundance 6000-136 and Waterway 817-3501
1-Pack Excel Filters XLS-418 replacement filter cartridge for Pentair/Rainbow Dynamic 35, Sundance 6000-136 and Waterway 817-3501 — view 2
1-Pack Excel Filters XLS-418 replacement filter cartridge for Pentair/Rainbow Dynamic 35, Sundance 6000-136 and Waterway 817-3501 — 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
Excel FiltersPool and Spa Filter

Excel Filters XLS-418 Replacement Filter Cartridge, 1-Pack

Fits Pentair Rainbow Dynamic 35 and Waterway 35 Sq. Ft. and the other systems listed below. Cross-References Pleatco PRB35-IN, Unicel C-4335 and Filbur FC-2385.

Made in the USA by Excel Filters

SKU XLS-418 1PACK · UPC 810625020211

$29.99 Single Cartridge
Free shipping. Tax calculated at checkout.
In stock 67 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/Rainbow Dynamic Series IV DFM / DFML 35, Waterway 35, Waterway top-load/in-line 35 sq. ft. housing.
  • Your old part number — 17-2482, ULTRA-S7, C-4335, FC-2385, 817-3501. See all 32 compatible parts →
  • Your measurement — 4 15/16" diameter, 9 1/4" height, 2 1/8" Open End caps top and bottom.

Pick your brand: Pentair Rainbow Dynamic 35 →Waterway 35 Sq. Ft. →Sundance Tacoma 680 using 6000-136Other brands CMP 35 using 25393-000-000

Overview

Built to OEM Spec, Engineered to Clean®

The XLS-418 is a replacement cartridge for the Pentair/Rainbow Dynamic Series IV DFM / DFML 35, Waterway 35, Sundance Tacoma 680 using 6000-136 and CMP 35 using 25393-000-000, plus 1 more filter listed under Compatibility. It replaces Pentair 17-2482 / R173431, Waterway 817-3501, Sundance 6000-136 and Harmsco H-4335, along with aftermarket Pleatco ULTRA-S7 / PRB35-IN, Unicel C-4335 / C-4335RA and Filbur FC-2385 / FC-2385M.

Each cartridge is 4 15/16" in diameter and 9 1/4" long with a 2 1/8" open end cap top and bottom, and carries 35 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
4 15/16"
Overall length
9 1/4"
Top end cap
2 1/8" Open End
Bottom end cap
2 1/8" Open End
Filtration area per cartridge
35 ft²
Total filtration area
35 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/Rainbow Dynamic Series IV DFM / DFML 35
Waterway™ Housings
Waterway 35Waterway top-load/in-line 35 sq. ft. housing
Sundance® Housings
Sundance Tacoma 680 using 6000-136
Other Brands' Housings
CMP 35 using 25393-000-000

Replaces These Part Numbers

OEM and competitor cartridge part numbers this product replaces

Pentair®
Waterway™
Sundance®
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.

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 17-2482, ULTRA-S7, C-4335, FC-2385, 817-3501, 6000-136, H-4335 and R173431. The Compatibility tab lists the rest.

Which filters does this cartridge fit?

It fits the Pentair/Rainbow Dynamic Series IV DFM / DFML 35, Waterway 35, Waterway top-load/in-line 35 sq. ft. housing and Sundance Tacoma 680 using 6000-136. The Compatibility tab lists the others. 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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