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GE FQK1K SmartWater Under Sink Water Filter Replacement Cartridge | Fits GE GXSV65R GXSV10C GXSV10CBL GNSV70RBL GSF25 Filter Systems
GE

GE FQK1K SmartWater Under Sink Water Filter Replacement Cartridge | Fits GE GXSV65R GXSV10C GXSV10CBL GNSV70RBL GSF25 Filter Systems

$33.95 - $169.75
MPN:
FQK1K
Condition:
New

GE FQK1K Replacement Water Filter — Single Stage & Inline Under-Sink Systems

ℹ️ This Is an Under-Sink Water Filter — Not a Refrigerator Filter: The GE FQK1K is a replacement filter cartridge for GE under-sink and inline water filtration systems. It is not a refrigerator water filter. It is designed to be installed inside the cabinet under your kitchen sink and delivers filtered water directly to a dedicated drinking water faucet. Confirm your under-sink system model before ordering.

Compatible Filtration Systems

The FQK1K is the replacement filter cartridge for the following GE under-sink and inline filtration systems:

GXK185KGXRLQKGXRLQR GXRLQGX1S50RGX1S50
Compatibility Tip: The FQK1K fits GE single-stage and inline under-sink filtration systems. If your system model number is listed above, this is your correct replacement cartridge. If your system is a different GE model (such as GXK140TNN or GXK255TBN), you may need a different filter — check your system's owner manual or the label on your current filter before ordering.

Product Description

The GE FQK1K is the genuine OEM replacement filter cartridge for GE single-stage and inline under-sink water filtration systems. Installed beneath your kitchen sink, this cartridge delivers clean, filtered water directly to your dedicated drinking water faucet — providing a consistent supply of great-tasting water for drinking, cooking, and making beverages.

The FQK1K uses a 0.5-micron activated carbon block to reduce a wide range of contaminants commonly found in tap water. It is certified to NSF/ANSI Standards 42, 53, and 401 — among the most comprehensive certifications available for under-sink filtration. The twist-and-lock design makes replacement quick and mess-free, with no tools required.

Key Features

  • Triple NSF Certified: Certified to NSF/ANSI Standards 42, 53, and 401 by IAPMO — covering aesthetic effects, contaminant reduction, and emerging contaminants
  • 0.5-Micron Filtration: Fine 0.5-micron carbon block captures smaller particles for thorough filtration
  • Chlorine Reduction: Reduces 97.2% of chlorine taste and odor for cleaner, fresher-tasting water
  • Sediment & Particulate Filtration: Reduces rust, sediment, and other particulates for clearer water
  • 6-Month Filter Life: Replace every 6 months for best filtration results
  • Twist-and-Lock Design: Tool-free, no-mess installation — swap cartridges in minutes
  • Under-Sink Installation: Installed inside the cabinet beneath your kitchen sink — out of sight and out of the way
  • Genuine GE OEM Part: Guaranteed fit for compatible GE under-sink filtration systems
  • BPA-Free Construction: Food-grade, lead-free materials for safe, clean drinking water

Filtration Performance

Contaminant Reduction Rate
Chlorine Taste & Odor 97.2%
Cysts 99.99%
Atrazine (Herbicide) 94.5%
Sediment & Particulates Significant reduction — 0.5-micron nominal rating
NSF 42 Certification Aesthetic effects — chlorine, taste, odor, particulates
NSF 53 Certification Health effects — cysts, VOCs, and other contaminants
NSF 401 Certification Emerging contaminants — select pharmaceuticals and VOCs

Installation Instructions

  1. Turn Off Water Supply: Turn off the cold water supply valve under the sink before beginning
  2. Locate the Filter Housing: The filter housing is located under the sink, connected to the cold water line and the dedicated drinking water faucet
  3. Remove Old Cartridge: Grasp the old filter cartridge and twist it counterclockwise (left) to unlock, then pull it straight down and out of the housing
  4. Prepare New Cartridge: Remove the protective packaging from the new FQK1K cartridge
  5. Install New Cartridge: Align the new cartridge with the housing and push it up into position, then twist clockwise (right) until it locks securely into place
  6. Turn Water Back On: Slowly open the cold water supply valve
  7. Flush the System: Run water from your dedicated drinking water faucet for 3-5 minutes to flush air and activate the carbon block. The water may appear slightly cloudy initially — this is normal
  8. Check for Leaks: Inspect around the filter housing and connections to confirm there are no leaks before closing the cabinet
? Installation Tip: The twist-and-lock design requires only a quarter turn to lock and unlock. Do not overtighten. If you feel resistance when turning, ensure the cartridge is properly aligned before twisting. A correctly installed cartridge will have no gaps between the cartridge and the housing collar.

Replacement Schedule

Timeline Action
Every 6 Months Replace filter for optimal filtration performance
If Flow Rate Decreases Replace immediately — reduced flow indicates a saturated filter
If Taste or Odor Changes Replace immediately if water develops an off-taste or unpleasant smell
After Extended Non-Use Flush the system thoroughly before use after any period of inactivity

Alternate Compatible Part Numbers

FQK1K, GXRLQR, FQK2J, FQKPH, FQKLM, WS20X10025, WS20X10007, CLCH128

Frequently Asked Questions

Is the FQK1K a refrigerator water filter?

No. The FQK1K is a replacement cartridge for GE single-stage and inline under-sink water filtration systems. It is installed under your kitchen sink — not inside your refrigerator. For GE refrigerator water filters, see the MWF/MWFP, XWF/XWFE, RPWF/RPWFE, or MSWF models depending on your refrigerator.

How do I know if the FQK1K fits my under-sink system?

Check the model number on your GE under-sink filtration system — it is typically on a label on the housing or on the system's documentation. If your system is GXK185K, GXRLQK, GXRLQR, GXRLQ, GX1S50R, or GX1S50, the FQK1K is the correct replacement cartridge.

What is the difference between FQK1K and FQK2J?

The FQK1K is a single-stage filter for single-stage under-sink systems, while the FQK2J is designed for dual-flow systems (such as the GXK255TBN). In many cases the FQK1K and FQK2J are cross-compatible, but always confirm by checking your filtration system's model number and owner manual before ordering.

How often should I replace the FQK1K filter?

GE recommends replacing the FQK1K every 6 months for best filtration performance. Replace sooner if you notice a reduction in water flow from your drinking water faucet or any change in water taste or odor — both are signs the carbon block is saturated.

Do I need to turn off my main water supply to replace this filter?

No — only the cold water supply valve under the sink needs to be turned off before replacing the cartridge. The main household water supply does not need to be shut off.

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