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Water Filter for the LG LFX28977ST (LT600P)
✓ 100% compatible — no bypass plug needed
🔧 5-min push-in swap
🇺🇸 Ships from Indiana
Every cartridge that fits this model — pulled live from the catalogue:
✓
LFX28977ST specifics — where the filter actually lives
The LFX28977ST carries its water filter inside the fresh-food cavity, upper zone in most French-door builds, a deliberate placement that keeps the swap away from the door seals and drawer rails. This is a push-twist style bay: two motions, one orientation, five minutes including the cleanup.
The recurring owner notes: run the first gallon or two through a fresh cartridge before drinking — carbon fines are normal — and reset the indicator so the countdown matches reality. The badge reads LFX28977ST, but the chassis reads LF: LG built these as French-door machines, and the filter bay inherits the geometry that implies, including where the dispenser feed runs. ST is finish coding: handles, colors, panel options — none of it reaches the filter bay.
LF vs LS — what the prefix tells you
The LF prefix sits next to LS in the catalog and the split is cabinet mission: split by cabinet mission (French-door versus side-by-side), joined by cartridge line — that is the LF/LS story. cabinet class 28 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
| 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.
LFX28977ST filter questions
How do I reset the filter light on the LG LFX28977ST?
With the new cartridge seated, press and hold the filter reset until the light clears — panel placement differs, so the LFX28977ST manual’s filter section has the exact control for your trim.
Running the LFX28977ST with an empty filter bay — does it need a cap?
The bay self-seals: with no cartridge the LFX28977ST still dispenses, just unfiltered. No bypass plug exists for this line.
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 LT600P 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 LFX28977ST?
Every six months or at the rated gallon capacity, whichever comes first — the LT600P 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
This bay takes the OEM LT600P. 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 →This filter expires six months from today
Your HVAC filter is probably on a different cycle. Track them all in one place.
months until this filter should be replaced (200-gal rated life)
Free tool · tracks fridge + HVAC + whole-house · auto-refill optional
More models using this filter
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