Water Filter for the LG LFX25974SB (LT500P)

Your LG refrigerator takes the LT500P slot. Below is every filter that fits — OEM and certified alternatives — with real prices.

✓ 100% compatible — no bypass plug needed

🔧 5-min push-in swap

🇺🇸 Ships from Indiana

LFX25974SB · Quick Facts

TYPE

refrigerator

YEARS MADE

—

FILTER LOCATION

top-left of the fresh-food compartment in most French-door layouts, away from the door bins

FILTER SLOT

LT500P bay

REPLACE EVERY

Every 6 months

ALSO BRANDED AS

—

LFX25974SB · Quick Facts

Filter locationtop-left of the fresh-food compartment in most French-door layouts, away from the door bins

Filter slotLT500P bay

Replace everyEvery 6 months

Typical installTwist or push — 5 minutes, no tools

Every cartridge that fits this model — pulled live from the catalogue:

✓

Verified fit for LFX25974SB. Cross-checked against LG service documentation — this model family uses the LT500P bay with no chip or bypass restrictions.

Not your model? Check the finder →

LFX25974SB specifics — where the filter actually lives

Finding the bay is the easy part — this chassis puts it top-left of the fresh-food compartment in most French-door layouts, away from the door bins, the same estate every French-door refrigerator in this family uses. It is a push-twist bay — the short locking turn after the press is what keeps the seal honest between changes.

The small print owners learn the hard way: the reset control is the step everyone skips; the light will not acknowledge a new cartridge on its own. LF is not a trim code, it is a chassis statement: LF marks the French-door line in LG’s catalog, so cross-referencing cartridges by chassis rather than by door style keeps you out of the wrong-parts queue. Trailing letters like SB denote trim and finish: stainless, panel-ready, handle variants. The water path is identical across them.

LF vs LS — what the prefix tells you

LF or LS: the badge difference that does (and does not) change the filter order. LF answers to French-door; LS answers to side-by-side; the water-filter answer is shared. call it a 25 cu ft box — which is why this cartridge works for a living rather than sitting decorative.

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

What it targets	Standard that covers it
Chlorine taste & odor	NSF/ANSI 42 — aesthetic effects
Particulates, Class I	NSF/ANSI 42 — fine sediment
Lead	NSF/ANSI 53 — health effects
Cysts (cryptosporidium, giardia)	NSF/ANSI 53 — microbial
PFOA & PFOS	NSF/ANSI 53 (P473) — varies by cartridge

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.

LFX25974SB filter questions

Filter light reset on the LG LFX25974SB — how?

With the new cartridge seated, press and hold the filter reset until the light clears — panel placement differs, so the LFX25974SB manual’s filter section has the exact control for your trim.

Will the LG LFX25974SB dispense water without a filter cartridge?

No bypass needed: the LT500P bay closes on its own, and running empty simply means the water skips filtration until you seat a new cartridge.

Are off-brand filters safe for a LG refrigerator?

Certified aftermarket cartridges are built to the same NSF test standards as the OEM part, and federal warranty law (Magnuson-Moss) protects your coverage when you use them.

Why is the OEM LT500P cartridge so much more expensive?

Part of the OEM price is the badge and the distribution chain. Certified alternatives meet the same test standards at a lower unit price, especially in multi-packs.

How often should I replace the filter in my LFX25974SB?

Every six months or at the rated gallon capacity, whichever comes first — the LT500P class cartridges all share that service interval.

Do I need to turn off the water supply to change it?

No — the bay is designed for a live swap. Expect a small dribble, keep a towel in reach, and flush a couple of gallons through the new cartridge before the first glass.

Every filter that fits your fridge

OEM LT500P cartridge

This bay takes the OEM LT500P. ClearFit verified-fit alternatives for this exact slot are being staged — every compatible option for your fridge is one lookup away.

Check every filter that fits →