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Filter number

Sub-Zero 4204490 refrigerator water filter

8 options for the Sub-Zero 4204490, price-compared: 8 compatible replacements (no genuine Sub-Zero cartridge is listed live right now). Every listing links to a full page with prices compared across sellers, and each carries its (FFN) Fridge.com Filter Number.

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About the Sub-Zero 4204490

Manufacturer
Sub-Zero
Filter type
Refrigerator water filter

Not sure this is your number? Enter your refrigerator model in the finder and it will name the filter from the manufacturer’s own fitment data.

Compatible replacements for 4204490

8 listings

Replacement cartridges made to fit the 4204490 platform, cheapest live price first. Each page shows the certifications the seller lists and every current offer.

Manufacturer performance sheet

Reported reductions for 4204490

This reference applies to the named brand and model. It does not establish performance for compatible or aftermarket alternatives. These substances are listed in document 7027035 REV-D; 34-8721-1454-0, checked 2026-09-30. Results apply to the named filtration systems under the sheet’s test conditions.

Sub-Zero water filtration system 4290510, replacement 4204490: 750 gallons; 0.78 gpm. Check the refrigerator manual for your system.

The manufacturer names NSF International and NSF/ANSI 42, 53. The sheet is a manufacturer report; any independently checked directory entries appear separately. A listed standard does not establish unlisted reduction claims.

View reported substances and test conditions
Reported reductions, page 2. Each row is a sheet entry, not a count of independently tested contaminants.
Substance or groupEvidence
Chlorine taste and odorReduction reported in this sheet
Nominal Particulate Class IReduction reported in this sheet
AsbestosReduction reported in this sheet
AtrazineReduction reported in this sheet
BenzeneReduction reported in this sheet
CarbofuranReduction reported in this sheet
CystsReduction reported in this sheet
Lead (pH 6.5)Reduction reported in this sheet
Lead (pH 8.5)Reduction reported in this sheet
LindaneReduction reported in this sheet
Mercury (pH 6.5)Reduction reported in this sheet
Mercury (pH 8.5)Reduction reported in this sheet
ToxapheneReduction reported in this sheet
p-DichlorobenzeneReduction reported in this sheet

This exact-system reference differs from the broader Designer Series manual, which also lists turbidity. Those tables are not merged. Cyst testing used Cryptosporidium parvum oocysts.

Read the source for challenge concentrations, reduction percentages, operating limits and replacement instructions. Laboratory results do not guarantee performance in your home, and listed substances may not be present in your water. These filters do not make microbiologically unsafe or unknown-quality water safe without appropriate disinfection.

Read the manufacturer sheet (PDF)Check the current certifier directory

Performance evidence for each option

A compatible fit does not transfer the OEM reduction claims. Each option needs its own exact brand, cartridge and system evidence. Unverified means evidence is missing here, not that a filter failed a test.

Filter questions, answered

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