LG LT800P Refrigerator Water Filter: Part Numbers, What Fits, Cross-Fit Alternatives and How It Differs From the LT700P and LT1000P
LG LT800P (ADQ73613401, ADQ73613408) is rated 200 gallons or 6 months, NSF/ANSI 42 and 53 per LG's page; ICEPURE's cross-fit lists 42 and 372, not 53.
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Short answer
The LG LT800P is the genuine cartridge for an LG refrigerator whose current filter is printed LT800P, and LG’s product page sells it under two part numbers: ADQ73613401 and ADQ73613408. LG rates it at 200 gallons or 6 months and lists it as certified to NSF/ANSI 42 and NSF/ANSI 53, the aesthetic and the health-contaminant filtration standards. It twists into the door housing without tools. It is a third LG part-number family, separate from the LT700P and the LT1000P, and no LT800P number appears on either of those two LG pages. Cross-fit cartridges from Waterdrop and ICEPURE drop into the same housing, but both list their cartridges to NSF/ANSI 42 and 372, not 53. The spec that must match is the part number printed on the cartridge you are removing, not the refrigerator model, because LG publishes no compatible-model list for the LT800P.
The picks
The exact part, NSF/ANSI 42 and 53 per LG; skip it if only NSF/ANSI 42 taste-and-odor matters and price is the deciding factor
LG LT800P genuine (ADQ73613401)
200 gallons or 6 months; part numbers ADQ73613401, ADQ73613408 and ADQ75795104 in the listing title; UPC 048231786195; Horizontal type per LG's Specifications tab; single cartridge, with 2 pack and 3 count options
Cross-fit with a published spec, NSF/ANSI 42 and 372 per its maker; skip it if you specifically need the NSF/ANSI 53 health-contaminant listing
ICEPURE RWF3500A 2 pack
0.5 micron outer layer and a 97.5% chlorine, taste and odor reduction claim on the maker's page; no capacity published; 2 pack
Cheapest per cartridge; NSF/ANSI 42 and 372 per its product label, not the NSF/ANSI 53 the genuine part carries
Waterdrop LT800P replacement 3 pack
200 gallons or 6 months, 0.5 gpm flow rate and NSF/ANSI 42 and 372, all per the product label photo; no micron rating published; 3 pack
If the cartridge you just pulled is printed LT700P or LT1000P, leave now: the LT700P page and the LT1000P page carry those, and nothing here fits that housing.
Which part numbers are the genuine LT800P?
LG’s LT800P product page prints “Model LT800P” with part numbers ADQ73613401 and ADQ73613408, a “6 Month / 200 Gallon Capacity”, and NSF42 and NSF53 certification. LG’s Specifications tab adds a “Type: Horizontal” cartridge and, in its Warranty & UPC section, UPC 048231786195 for the genuine ADQ73613401. The genuine LT800P listing title carries the same model, rating and certifications, and its pack is a single cartridge, with 2 pack and 3 count size options.
| Part number | Where it appears | Status |
|---|---|---|
| ADQ73613401 | LG’s page and the listing title | Genuine LT800P, per LG |
| ADQ73613408 | LG’s page and the listing title | Genuine LT800P, per LG |
| ADQ75795104 | The listing title only | Not on LG’s page as read; treat as the listing’s number |
| ADQ73613402, ADQ73613403, ADQ73613401-S, ADQ32617801, ADQ32617703, LT800PC | ICEPURE’s page only (Waterdrop also cites ADQ73613402) | Aftermarket cross-references; not on LG’s page as read |
LG sells the filter through a model-number finder and publishes no static list of refrigerators it fits, so the fit rule is the number on the cartridge, not a model range. ICEPURE’s Replacement Model tab lists 48 compatible LG refrigerator models it claims to fit, for example LMXC24746S, LMXS30746S and LSXS26326S; this page records that as ICEPURE’s claim, not LG’s, since LG’s own page offers only the model-number lookup tool.
What else fits the same housing?
Two aftermarket makers sell a twist-in cartridge for the LT800P housing. Every figure below is the maker’s own published specification, read from its product page or, for Waterdrop, its product label photo, on 2026-09-15 and 2026-09-16; nothing was tested, and no certification was cross-checked in the NSF, WQA or IAPMO listing databases.
| Alternative | Rated capacity (maker’s page) | Micron | Certification (per the maker’s page) | What differs from the genuine |
|---|---|---|---|---|
| ICEPURE RWF3500A | Not published | 0.5 micron outer layer | NSF/ANSI 42 and 372 | No NSF/ANSI 53; claims 97.5% reduction of chlorine, taste, odor, THM, VOCs and particles; sold as a 2 pack |
| Waterdrop LT800P replacement | 200 gallons (757 litres) or 6 months, 0.5 gpm (1.9 lpm) flow rate, per the product label photo | Not published | NSF/ANSI 42 and 372, per the product label photo | No NSF/ANSI 53; no micron figure printed anywhere on its maker’s page; sold as a 3 pack |
NSF’s standards summary draws the line the table turns on. NSF/ANSI 42 sets minimum requirements for systems that reduce non-health-related contaminants such as chlorine, taste and odor, chloramine and particulate; NSF/ANSI 53 covers specific health-related contaminants such as lead and Cryptosporidium.
ICEPURE’s own page pairs 372 with the words “Lead-Free,” not with a contaminant-reduction claim, and Waterdrop’s label pairs 372 with “lead-free” the same way, so a cartridge listed to 42 and 372 has not made the reduction claim that 42 and 53 together make.
If lead from a service line is the reason the filter matters, that is an NSF/ANSI 53 question and only the genuine cartridge lists it here. If the complaint is chlorine taste, both cross-fits cite 42.
How do the LT800P, LT700P and LT1000P differ?
LG runs three separate part-number families for its twist-in door filters, each tied to a different refrigerator door and dispenser generation. The LT800P is rated 200 gallons or 6 months on LG’s LT800P page; the other two families are covered in full, with their own LG-page ratings and certifications, on the LT700P page and the LT1000P page.
| Filter | LG part-number family | Rating and certification | Where the full part list lives |
|---|---|---|---|
| LT800P | ADQ73613401, ADQ73613408 | 200 gallons or 6 months; NSF/ANSI 42 and 53, per LG’s LT800P page | This page |
| LT700P | Its own family; no LT800P number | See linked page | LT700P page |
| LT1000P | Its own family; no LT800P number | See linked page | LT1000P page |
No LG page states the physical reason the three do not swap.
How often does it need replacing?
LG prints “6 Month / 200 Gallon Capacity” for the LT800P and does not say which figure governs, so replace at whichever arrives first: a household that runs the dispenser hard reaches 200 gallons before the 6 months are up.
LG’s page publishes neither a flow rate nor a micron rating for the genuine cartridge; the 0.5 micron figure above belongs to ICEPURE.
How does LG say to spot a counterfeit?
LG’s genuine-filter page states that only genuine LG refrigerator water filters are tested and certified by NSF International, and that counterfeit, deceptively labeled and third-party filters can cause damage not covered under the LG warranty, are not guaranteed to properly filter water and may not fit correctly. LG’s stated remedy is to purchase filters directly from LG.
LG publishes no hologram or packaging checklist. The one check its page supports is the number on the box: it should be ADQ73613401 or ADQ73613408, with the NSF/ANSI 42 and 53 marks beside it.
Genuine or cross-fit
The genuine LT800P costs more per cartridge than either cross-fit, and the ICEPURE RWF3500A is the only alternative here whose maker prints a micron figure at all.
If NSF/ANSI 53 (lead, cysts) is why you change the filter, buy the genuine part: it is the only cartridge on this page that lists 53. Skip the genuine part if only NSF/ANSI 42 taste-and-odor matters and price is the deciding factor.
If NSF/ANSI 42 taste-and-odor is enough, the ICEPURE 2 pack fits the housing with a published 0.5 micron rating; skip it if you specifically need the NSF/ANSI 53 health-contaminant listing. The Waterdrop 3 pack matches the genuine capacity at 200 gallons or 6 months per its label; skip it if you want a published micron rating, which its maker’s page does not print.
Frequently asked questions
What part numbers is the genuine LG LT800P sold under?
LG's LT800P product page prints two part numbers for the genuine cartridge: ADQ73613401 and ADQ73613408. The genuine listing title adds ADQ75795104, which does not appear on LG's page as read. Aftermarket makers also cite ADQ73613402, ADQ73613403 and LT800PC as numbers their cartridge replaces; those are the aftermarket makers' cross-references, not numbers LG prints.
What is the rated capacity of the LG LT800P?
LG's product page prints a 6 month or 200 gallon capacity for the LT800P and does not say which figure governs, so replace at whichever arrives first. LG's page publishes no flow rate and no micron rating for the genuine cartridge, and it lists the filter as certified to NSF/ANSI 42 and NSF/ANSI 53.
How does LG say to avoid a counterfeit LT800P?
LG's genuine-filter page states that only genuine LG refrigerator water filters are tested and certified by NSF International, and that counterfeit, deceptively labeled and third-party filters can cause damage not covered under the LG warranty, are not guaranteed to properly filter water and may not fit correctly. LG's stated remedy is to buy directly from LG. LG publishes no hologram or packaging checklist.
What does NSF/ANSI 53 cover that NSF/ANSI 42 does not?
NSF's standards summary puts NSF/ANSI 42 as the minimum requirements for systems that reduce non-health-related contaminants such as chlorine, taste and odor, chloramine and particulate. NSF/ANSI 53 covers specific health-related contaminants, the most common claims being lead, Cryptosporidium, VOCs and chromium. LG lists the LT800P to both; which of the 53 claims it carries is not printed on LG's page.
Does the ICEPURE RWF3500A carry the same certification as the genuine LT800P?
No. ICEPURE's product page lists the RWF3500A to NSF/ANSI 42 and 372, while LG's page lists the genuine LT800P to NSF/ANSI 42 and 53. ICEPURE's own page pairs 372 with the word 'Lead-Free' rather than with a contaminant-reduction claim, so 42 plus 372 is not the same claim as 42 plus 53. Both listings are the makers' own pages, not cross-checked in a certifier database.
Fact sheet and how to cite this page
- Answer
- The genuine LG LT800P is sold under LG part numbers ADQ73613401 and ADQ73613408 (UPC 048231786195), rated 200 gallons or 6 months and listed to NSF/ANSI 42 and 53 on LG’s product page. It is a third LG part-number family, separate from the LT700P and the LT1000P. The ICEPURE RWF3500A cross-fit and Waterdrop’s own product label both list NSF/ANSI 42 and 372, not 53.
- Applies to
- LT800P
- Compatibility basis
- LG’s LT800P product page on lg.com, which prints the model, its two part numbers, the 200 gallon / 6 month capacity and the NSF42 and NSF53 certification
- Assumptions
- Certifications are listed per each maker’s own page; the NSF, WQA and IAPMO listing databases are form-driven and were not queried by URL this session, so none was cross-checked there.
- LG publishes no static list of compatible refrigerator models on the page read; the fit rule here is the part number printed on the cartridge being removed.
- The 0.5 micron figure on this page belongs to the ICEPURE cartridge; LG’s page prints neither a micron rating nor a flow rate for the genuine filter. Waterdrop’s product label photo prints a 200 gallon / 6 month capacity, a 0.5 gpm flow rate and NSF/ANSI 42 and 372 certification, but no micron rating.
- Method
- Part numbers, rating, type, UPC and certifications read from LG’s LT800P product page (Overview and Specifications tabs) and LG’s genuine-filter page on 2026-09-15 and 2026-09-16; cross-fit specs read from each aftermarket maker’s own product page, including Waterdrop’s product label photo and ICEPURE’s Replacement Model and Certification tabs; ASIN titles and pack sizes read from the live listings. Nothing was tested.
- Primary source
- LG, LT800P replacement refrigerator water filter product page (manufacturer or vendor document)
- Facts verified
- Last updated
- Cite as
- OwnerSpec, "LG LT800P Refrigerator Water Filter: Part Numbers, What Fits, Cross-Fit Alternatives and How It Differs From the LT700P and LT1000P", https://ownerspec.com/water/parts/lg-lt800p-refrigerator-filter/, facts verified 15 September 2026.
Every figure above also appears, with its source, in the article. All sources ยท How OwnerSpec verifies numbers
Sources
- LG, LT800P replacement refrigerator water filter product page (manufacturer or vendor document)
- LG, genuine refrigerator water filters (counterfeit statement) (manufacturer or vendor document)
- NSF, NSF/ANSI 42, 53 and 401 Filtration Systems Standards (PDF) (standards or certification body)
- Waterdrop, replacement for LG LT800P product page (manufacturer or vendor document)
- ICEPURE, RWF3500A replacement for LG LT800P product page (manufacturer or vendor document)