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Replaces Waterco Part # 622820
Fits & replaces
This Excel Filters cartridge (XLS-660) is a direct-fit replacement for Waterco TC 400 (622820) and Tri Cart 400 (622820) filter systems, cross-referenced with OEM Waterco® 622820. Confirm the part number on your current cartridge — or its diameter, length, and end caps — before ordering.
See the full compatibility list (3) →
Pleatco / Unicel / Filbur equivalents on the cross-reference chart →
Built to OEM dimensions for Waterco TC 400 (622820) and Tri Cart 400 (622820) cartridge filter systems, this replacement matches the original cartridge geometry, end-cap style, and media surface area — without the OEM markup. It directly replaces OEM Waterco® 622820 part numbers — the full cross-reference list is in the Compatibility tab. Every cartridge is manufactured in our Austin, TX facility, ships free, and is backed by the Excel Filters Perfect Fit Guarantee on its listed cross-references.
The XLS-660 3PACK 3-pack replacement cartridge is engineered for Waterco and built for dependable day-to-day filtration performance. Each cartridge is sized at 6 3/16" diameter x 31 1/4" length, with Open End top and Open End bottom end caps for direct-fit installation with no housing modifications.
Measure your old cartridge cap-to-cap. A variance of ⅛" is normal — anything larger likely means a different housing model.
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
Can't find your part number? Look it up on the full pool filter cartridge cross-reference chart.
The Excel Filters XLS-660 replaces Waterco 622820.
It fits Waterco Fulflo Tri-Cartridge C400, TC400. If your housing is not listed, match the part number stamped on your current cartridge on our cross-reference chart.
6 3/16" diameter, 31 1/4" long, 133.3 ft² of media (end caps — top: 2" Open End, bottom: 2" Open End). Measure your old cartridge before ordering if you are unsure of the part number.
No. The XLS-660 is an independently manufactured replacement cartridge, made in the USA by Excel Filters and built to match the Waterco 622820 specification. Waterco is a trademark of its owner, used only to show compatibility.
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.
XLS-661 1Pack
In stockReplaces Waterco Part # 62453
XLS-662 1Pack
In stockReplaces Waterco Part # 62451
XLS-718 4Pack
In stockReplaces R173576, PCC105, Unicel C-7471, Filbur FC-1977
XLS-722 4Pack
In stockReplaces CX875RE, CX880XRE, PA106, C-7488, FC-1226
