LG 9990 Refrigerator Water Filter
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The short answer on the 9990
The 9990 cartridge fits lg refrigerators using the twist-in housing. Kenmore 9990 = LG LT600P. Replacement interval: ~200 gal / 6 months. This page lists every verified model, the honest certification picture, and what the cartridge should cost.
Verified fit: 505 refrigerator models in our cross-checked library. Install time: 2 minutes, no tools. This page is part-number specific — for the model-page view (where the filter lives on your exact fridge), follow any link in the compatible-models table below. Twist-in from the ceiling on most LG side-by-sides; door-fridge bays sit top-right.
9990 vs LT700P vs LT800P vs LT500P — which cartridge does your fridge take?
| Part | Interface era | RFID chip | NSF claims | Replacement path |
|---|---|---|---|---|
| LT700P | Side-by-side LT bay | No chip | 42/53/401/372 | Distinct slot |
| LT800P | LT800P bay | No chip | Not stated in our evidence file | Distinct slot |
| LT500P | LT500P bay | No chip | Not stated in our evidence file | Distinct slot |
Certification lines above are traced to our verified evidence file (part-number × version facts); third-party compatibles usually carry less.
What an 9990 should cost
We do not print an OEM list price for the 9990 — our price file has no captured listing for it, and a guessed anchor is worse than none. Check the manufacturer's own parts store for the genuine price; third-party compatibles cluster at $8–15 per cartridge (mostly NSF/ANSI 42 only) with a premium 42+53 tier above them.
Refrigerators that take the 9990
| Verified models (sample of 505) |
|---|
| 79539113600 |
| 79551072010 |
| 79551072011 |
| LFX21960ST |
| LFX21971ST |
| LRSC26910SW |
| LSC243ST |
| LMX219781ST |
| 5231JA2005A |
| LFD21860ST |
| LRFD21855ST |
| 71013-SERIES |
| LRBC22544SB |
| 9990 |
| CLS30320001 |
| LSMX211ST |
| 04609990000 |
| 10673003510 |
| 113541 |
| 46-9990 |
Model number on your fridge is on the plate inside the fresh-food compartment. Full list via the brand hub: LG filter hub.
Swap it in 2 minutes
- Twist the old cartridge a quarter turn counterclockwise and pull it straight down — keep a towel in reach for the dribble.
- Check both o-rings sit in their grooves, then fill the new cartridge's top with cold tap water so the chamber is not fighting an air pocket.
- Offer the new cartridge to the bay, push up, and twist a quarter turn clockwise until the positive stop catches.
- Run 1–2 gallons through the dispenser to flush carbon fines, then hold the filter-reset control about 3 seconds until the status light clears.
What the 9990 is actually certified to remove
No NSF claim stated in our evidence file. The honest framing: the two tiers that matter in compatibles are 42-only (taste, chlorine, sediment) and 42+53 (adds tested lead and cyst reduction). Claims are part-number × version facts — NSF listings update with annual re-tests, so re-check the certified-product database before relying on a claim. PFOA/PFOS reduction claims live under NSF/ANSI 53 (P473 protocol), not under 401 — a listing that says otherwise is wrong.
What does the 9990 replace?
Replacement path: Kenmore 9990 = LG LT600P. Within a family, buying the newer part number is always the safe choice — older cartridges often physically fit newer bays but cause no-water or error conditions.
Does the 9990 water filter have an RFID chip?
None. Only GE's RPWFE line carries an authentication chip; no other mainstream refrigerator cartridge on this site verifies electronically.
How hard is it to install a 9990?
A 2 minutes, no-tools job: twist or push the old cartridge out, seat the new one, flush 1–2 gallons to clear carbon fines, then hold the filter reset until the light clears.
Which certification should I look for in a compatible 9990?
No NSF claim stated in our evidence file. Third-party compatibles split into two tiers: NSF/ANSI 42 only (taste, chlorine, sediment) and 42 + 53 (adds tested lead and cyst reduction). If a listing does not name the standard, assume 42 only.
Related part numbers & guides
- LT700P — Distinct slot
- LT800P — Distinct slot
- LT500P — Distinct slot
- LG filter hub — every system the brand uses
- How to change an LG refrigerator water filter
- NSF 42 vs NSF 53 — what each certification actually tests
- OEM vs aftermarket water filters — the honest comparison
Not sure this is your cartridge?
The model number on the plate inside your fridge (fresh-food compartment, left wall or ceiling) is the ground truth. Match it in the finder and buy with confidence.
Not sure it is your cartridge? Use the fridge filter finder · All refrigerator water filters
OEM vs certified aftermarket filters → (what the difference really is, and when the cheaper one is fine)