Water Filter for the LG LSXS27466 (LT800P)

LSXS27466 specifics — where the filter actually lives

Finding the bay is the easy part — this chassis puts it behind the lower fresh-food trim or base grille in most side-by-side layouts, so expect to clear one shelf edge before you have working room. Mechanically the LSXS27466 uses a push-and-twist cartridge: the cartridge locks with a short rotation after seating; if it rotates freely, it is not seated.

The small print owners learn the hard way: flush before the first glass — new carbon beds shed fines for the first gallon or so, which is cosmetic, not contamination. The badge reads LSXS27466, but the chassis reads LS: LS is LG’s side-by-side designation proper, and the service literature files every one of these under the same cartridge line. The 66 suffix here is a revision index, not a different machine — trim and door hardware can shift between revisions, the filter bay does not.

LS vs LF — what the prefix tells you

The catalog pairs LS with LF, and the split matters at order time: The door count differs — side-by-side against French-door — but the bay and the cartridge order do not. Cabinet decode: 27 cubic feet — the number that tells you whether this cartridge feeds a family-size dispenser or a compact one.

Swap it in 5 minutes

• Press the release (if fitted), twist the old cartridge free, and pull it from the header.
• Wet the new cartridge’s o-ring with cold tap water so it seats without dragging.
• Push the cartridge square onto the header, then give it the locking quarter turn.
• Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.

What this filter takes out of your water

Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.

LSXS27466 filter questions