Sub-Zero 4204490 Water Filter Replacement – 9030868, 4290510 Compatible

Looking for a Sub-Zero 4204490 water filter replacement? This twist-in refrigerator water filter is designed for compatible Sub-Zero Classic, Designer, and PRO series appliances. It helps reduce chlorine taste and odor, particulates, and other specified contaminants listed in the manufacturer's filtration performance data. The 4204490 cartridge is interchangeable with part number 9030868 and has a rated capacity of up to 750 gallons, with replacement recommended at least every 12 months or sooner when indicated by your refrigerator. Confirm your appliance's model and serial number before ordering, particularly if you own an older Classic BI refrigerator.

Product Details

• Manufacturer: Sub-Zero
• Replacement Filter Part Number: 4204490
• Interchangeable Number: 9030868
• Filter Style: Twist-in cartridge
• Rated Capacity: Up to 750 gallons
• Replacement Interval: Up to 12 months, subject to usage and water conditions
• Compatible Refrigerator Families: Classic, Designer, and PRO
• Service Flow Rate: 0.78 GPM
• Operating Pressure: 35–120 PSI
• Water Temperature: 33°F–100°F

Special Features

Designed for Compatible Sub-Zero Refrigerators

The 4204490 is a manufacturer-specified replacement water filter for compatible Sub-Zero refrigeration systems. Checking the original cartridge number is an effective way to help avoid ordering the wrong filter.

Supports Better-Tasting Drinking Water

The filter is designed to reduce chlorine taste and odor while filtering particulates. The manufacturer's performance data also documents reductions in specific contaminants under controlled test conditions.

Reliable Replacement Schedule

The filter is rated for up to 750 gallons and up to one year of use. Water conditions and usage can affect its actual service life, so follow the refrigerator's filter indicator and maintenance instructions.

Easy Twist-In Cartridge Design

The twist-in design provides a straightforward replacement process for compatible units. Correct installation and adherence to the appliance's instructions are important for proper operation.

Compatibility and Replacement Numbers

Compatible Series: Classic (BI, CL), Designer (IT, IC, DEC, DET), PRO (648PRO, PRO3650, PRO4850)

Current Replacement: 4204490

Interchangeable Part Number: 9030868, 4290510

Serial Number Check: Older Classic BI refrigerators may require a different filter. For serial numbers 4116297–4134313, verify that the existing filter is 7005017, 7009931, or 4204490 before ordering. For earlier units, consult Sub-Zero's official part-number guidance.

When Should You Replace the Filter?

Replace your Sub-Zero refrigerator water filter when the filter indicator illuminates, water flow noticeably decreases, or the applicable replacement interval is reached. The manufacturer's guidance recommends replacement at least every 12 months, with earlier replacement when necessary.

Before You Order

Confirm that your appliance uses the 4204490 twist-in water filter. If you're unsure, check the number printed on your existing cartridge or use Sub-Zero's official filter finder with your refrigerator's serial number.

Use only with potable water and follow all applicable installation, flushing, and maintenance instructions supplied for your appliance.