Sub-Zero 4204490 Water Filter Replacement

Compatible with: BI, CI, and UC Series Sub-Zero Refrigerators

Keep your water fresh, clean, and tasting great with this high-quality replacement for the Sub-Zero 4204490 water filter. Designed to match OEM performance, this filter removes impurities, chlorine, and unpleasant odors — ensuring your luxury refrigerator continues to deliver the premium experience it was built for.

• 💧 Improves water clarity and taste

• ⚙️ Helps maintain refrigerator performance and longevity

• ✅ Guaranteed to fit all models using the 4204490 filter

Recommended replacement: every 6 months for optimal performance.
Ships fast anywhere in the U.S. — no subscriptions, no technicians, just the filter you need.

• Authentic Sub-Zero 4204490 Water Replacement Filter in-stock with free shipping and free returns. 

• 4204490 Replacement Water Filter Fits Built-In, PRO48, and Integrated Refrigerators

• Genuine OEM Part from the Sub-Zero factory in Madison, WI. Made in the U.S.A.

• Ensures your Sub-Zero serves the highest quality water and ice for up to six months!

• Meets or exceeds NSF/ANSI Standards 42 & 53

Factory Certified OEM Authentic and Genuine part from Sub-Zero in Madison, Wisconsin.

Installation Instructions for the 4204490 can be found here. 

This Sub Zero Water Filter replacement part will ensure that your whole family is drinking SAFE drinking water.

• PRO 48 (Model # 648PRO)
• 30" Classic Over-and-Under Refrigerator/Freezer with Glass Door (Model # BI-30UG)
• 36" Classic Freezer (Model # BI-36F)
• 36" Classic Side-by-Side Refrigerator/Freezer (Model # BI-36S)
• 36" Classic Over-and-Under Refrigerator/Freezer (Model # BI-36U)
• 36" Classic French Door Refrigerator/Freezer (Model # BI-36UFD)
• 36" Classic French Door Refrigerator/Freezer with Internal Dispenser (Model # BI-36UFDID)
• 36" Classic Over-and-Under Refrigerator/Freezer with Internal Dispenser (Model # BI-36UID)
• 42" Classic Side-by-Side Refrigerator/Freezer (Model # BI-42S)
• 42" Classic Side-by-Side Refrigerator/Freezer with Dispenser (Model # BI-42SD)
• 42" Classic Side-by-Side Refrigerator/Freezer with Internal Dispenser (Model # BI-42SID)
• 42" Classic French Door Refrigerator/Freezer (Model # BI-42UFD)
• 42" Classic French Door Refrigerator/Freezer with Internal Dispenser (Model # BI-42UFDID)
• 48" Classic Side-by-Side Refrigerator/Freezer (Model # BI-48S)
• 48" Classic Side-by-Side Refrigerator/Freezer with Dispenser (Model # BI-48SD)
• 48" Classic Side-by-Side Refrigerator/Freezer with Internal Dispenser (Model # BI-48SID)
• 18" Designer Column Freezer with Ice Maker (Model # IC-18FI)
• 24" Designer Column Refrigerator/Freezer with Ice Maker (Model # IC-24CI)
• 24" Designer Column Freezer with Ice Maker (Model # IC-24FI)
• 30" Designer Column Freezer with Ice Maker (Model # IC-30FI)
• 30" Designer Column Refrigerator with Internal Dispenser (Model # IC-30RID)
• 36" Designer Column Freezer with Ice Maker (Model # IC-36FI)
• 36" Designer Column Refrigerator with Internal Dispenser (Model # IC-36RID)
• 30" Designer Over-and-Under Refrigerator/Freezer (Model # IT-30CI)
• 30" Designer Over-and-Under Refrigerator/Freezer with Ice Maker and Internal Dispenser (Model # IT-30CIID)
• 30" Designer Over-and-Under Freezer with Ice Maker (Model # IT-30FI)
• 30" Designer Over-and-Under Refrigerator with Internal Dispenser (Model # IT-30R)
• 36" Designer Over-and-Under Refrigerator/Freezer with Ice Maker (Model # IT-36CI)
• 36" Designer Over-and-Under Refrigerator/Freezer with Internal Dispenser and Ice Maker (Model # IT-36CIID)
• 36" Designer Over-and-Under Refrigerator Internal Dispenser (Model # IT-36RID)
• 30" Designer Wine Storage with Refrigerator/Freezer Drawers (Model # IW-30CI)