Water Filter for the LG LFX25961ST (LT600P)

LFX25961ST specifics — where the filter actually lives

The filter bay on the LFX25961ST inside the fresh-food cavity, upper zone in most French-door builds, the same estate every French-door refrigerator in this family uses. This is a push-twist style bay: offer the cartridge to the header, press, and rotate until the stop catches; a towel handles the dribble.

Before you click buy, two things: plan on a towel for the first pull — sitting water in the line — and a five-second reset hold once the fresh cartridge is in. The badge reads LFX25961ST, but the chassis reads LF: LF is LG’s own coding for French-door machines, and in that format the water path is long enough that a neglected cartridge shows up as flow drop before it shows up as taste. The ST tail marks finish variants of one chassis; the filter bay is shared across the entire finish range.

LF vs LS — what the prefix tells you

Prefix families here: LF against LS. French-door on the LF side, side-by-side on the LS side — the parts catalog runs the same cartridge across both. cabinet class 25 cu ft — a box that size leans on the dispenser, so the six-month cartridge interval earns its keep.

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.

LFX25961ST filter questions