Sub-Zero 7023812 Refrigerator Water Filter OEM Replacement 

This filter is an OEM product of high-quality Refrigerator Water Filters using carbon block technology to remove chlorine, sediment, and odors. It is NSF/ANSI 42 certified, eliminates chlorine and sediment, and provides clean and crisp water along with refreshing ice for almost an entire year. There are no leakages when fitting older models of Sub Zero, such as BI36R, BI48S, and 501R.

Long Lasting Filter for Sub-Zero Refrigerators
This Sub-Zero water filter replacement is designed for older fridges, even in harsh water conditions. It ensures fresh ice, safe drinks, and keeps your fridge running smoothly for a full year. Fits models like BI-36U or 601F, securely locking in to block impurities and maintain freshness.

Sub-Zero 7023812 Water Filter: Keep Your Fridge Fresh
Crisp, Clean Water: “Removes” chlorine, sediment, and impurities for water and ice that is absolutely refreshing. 

12 months is long enough not to be swapping filters regularly.

Keeps your Sub-Zero’s water system clean, preventing scale and saving you from repair costs.

Materials & Construction of Sub-Zero 7023812 Water Filter

Primary Filtration: Contains densely packed activated carbon that removes chlorine, bad tastes and odors, and sediment, and provides excellent contact with the water for filtration.

Outer Shell & Seals: The sturdy casing prevents leaks and fits securely in Sub-Zero models.

Gaskets & O Rings: Food-grade elastomer seals to stop leakages and control the water flow into the system.

Manufacturing & Origin: MPG Sub-Zero product, proudly made in the USA to superior quality standards for dependable performance.

Sub-Zero 7023812 Replacement Water Filter (OEM)

Model: 7023812

Type: Carbon-block filter

Measurements: About 3.12 inches wide and 12.5 inches tall

Scale reading: 1.28 pounds (approx. 580 grams)

Material: Activated carbon
Rated life: Up to 12 months or manufacturer-specified gallons (≈235–300 gal)
Compatible: Sub-Zero refrigerators pre-serial #4116297

Meets NSF/ANSI Standard 42 Requirements

Installation Made Easy:

Installing the Sub-Zero 7023812 water filter is quick and tool-free. First, confirm your refrigerator’s serial number is compatible (pre-#4116297) and contact Sub-Zero support if needed. If recommended, turn off the water supply, remove the old cartridge with a simple quarter turn, and insert the new filter, aligning it correctly. Twist until securely locked and flush several liters of water to remove any initial carbon particles; then reset the filter indicator if your model has an electronic indicator.

This straightforward process ensures clean, fresh water and ice in minutes.

Comparative notes 

Carbon-block (7023812):

Best for chlorine taste/odor removal and sediment in harsh municipal or well water; long life in such conditions.

Microbiological filter :

Designed to address microbiological contamination and very fine particles — may be less suitable where heavy sediment load could clog it quickly. Retailers recommend carbon block for many “harsh water” scenarios.

OEM Advantage 

As a factory replacement part, the 7023812 is manufactured to Sub-Zero’s dimensional and material tolerances. OEM cartridges reduce the risk of fitting errors, bypass, or poor sealing that can occur with some aftermarket filters. 

Maintenance Tips 

Run water through the filter when installed, watch for changes in flow or taste, reset the fridge indicator, and keep spare filters in a cool, dry spot.