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Compatible Replacement for Waterway 817-0014. Cross-References Pleatco PLBS50, Unicel C-5345 and Filbur FC-2970.
SKU XLS-511 1PACK · UPC 810625026466
Confirm your fit
The XLS-511 is a replacement cartridge for the Waterway 45 sq ft top-load, Pentair/Rainbow R173584, Leisure Bay S2/G2 and Rec Warehouse 173584, plus 2 more filters listed under Compatibility. It replaces Waterway 817-0014 and Pentair R173584, along with aftermarket Pleatco ULTRA-S10 / PLBS50, Unicel C-5345 and Filbur FC-2970.
Each cartridge is 5 5/16" in diameter and 10 1/8" long with a 2 1/8" open end cap top and bottom, and carries 50 sq ft of filter media.
We make every cartridge in Austin, Texas, and shipping is free.
Measure your old cartridge cap to cap, then across the widest pleat.
How to measure a cartridge →Measuring your old cartridge
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.
Match your filter housing below, click any part number to verify the fit, or paste your existing part number into the search box.
Filter housings and systems this cartridge fits
OEM and competitor cartridge part numbers this product 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.
Still unsure after reading these? Send us the number stamped on your old cartridge and we will confirm the fit.
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.
It replaces 817-0014, ULTRA-S10, C-5345, FC-2970, R173584, Rec Warehouse 173584, Pure N Clean PC-2970 and Tier1 PAS-1354. The Compatibility tab lists the rest.
It fits the Waterway 45 sq ft top-load, Pentair/Rainbow R173584, Leisure Bay S2/G2 and Rec Warehouse 173584. The Compatibility tab lists the others. Check the model on your filter tank before you order.
No. Excel Filters makes this cartridge in Austin, Texas. It is not made, sold or endorsed by Waterway; we use the name only to show which filters it fits.
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.
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.
XLS-512 • 15-Pack
Low stockReplaces: Waterway 817-0015, Pleatco PLBS75, Unicel C-5374, Filbur FC-2971
XLS-404 • 2-Pack
In stockReplaces: Waterway 817-3510, Pleatco PRB17.5SF-PAIR, Unicel C-4401, Filbur FC-2386
*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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