Sparepla UK

Blog · Updated 21 Jul 2026

4CH-949 Filter Compatibility UK: Cross-Reference Before You Buy

Answer first: A correct 4ch-949 filter compatibility uk order starts with the moulded code on your old cartridge—then a spare so you are not waiting on cloudy water.

Careful buyers should trust moulded codes over marketing synonyms. A clear cross-reference saves a soggy returns label.

Speak the buyer’s language: compatibility, cross reference, equivalent.

Fit checks that prevent returns

Product note

Sparepla’s FD2007-compatible 2-pack (also listed against PWW50L / 4CH-949 / FC-0172) is priced at £57.76. Confirm codes on your shell before treating any listing as universal.

Frequently asked questions

Is 4CH-949 the same as FC-0172?

They are commonly cross-referenced on UK spa filters—still confirm physical dimensions.

What if my shell lists FD2007?

Many 2-packs list FD2007 alongside PWW50L and 4CH-949; match the printed codes on your old filter.

Why do some Darlly pages feel vague?

Vague titles cause wrong end-cap purchases—prefer listings that show the cross-ref table.

Should I keep the old filter until the new one arrives?

Yes, until the replacement seats cleanly.

View Spa Filter 2-Pack (FD2007/PWW50L) — £57.76