The GE SmartWater FXULC is a genuine GE undersink replacement water filter cartridge designed specifically for GE single-stage and dual-stage undersink filtration systems, including the GXULQ, GXULQR, GNSL05CBL, and GXSL55R housings. It installs inside the dedicated GE undersink housing beneath your kitchen sink and delivers filtered water to a dedicated faucet, providing cleaner, better-tasting drinking water directly at the tap.

The GE FXULC uses a carbon block filtration media with a 5-micron rating to reduce chlorine taste and odor, sediment, rust, sand, and silt from your drinking water. It is tested and certified to NSF/ANSI Standard 42 for aesthetic effects, ensuring verified reduction of chlorine and particulates for noticeably improved water taste and clarity at the tap.

The GE FXULC cartridge has a rated filtration life of 6 months or 750 gallons, whichever comes first, at a flow rate of 0.5 GPM. Replacement intervals may be shorter in households with higher water usage or heavy sediment levels. Replacing the FXULC on schedule maintains optimal flow rate and ensures consistent chlorine and sediment reduction performance.

Replacing the FXULC is a tool-free, twist-off process. Turn off the cold water supply to the undersink system, press the pressure relief button on the filter head (if equipped), then twist the old FXULC cartridge counterclockwise about a quarter turn and pull it straight down. Insert the new FXULC, twist clockwise until it locks, turn the water supply back on, and flush the new filter for 3–5 minutes to remove carbon fines and trapped air before use.

Yes, the FXULC sold at Discount Filter Store is a genuine GE SmartWater OEM cartridge, not an aftermarket compatible. It is engineered specifically for GE undersink housings such as the GXULQ, GXULQR, GXSL55R, GNSL05CBL, and GNSV25CBL systems. Because it is the original manufacturer's cartridge, fitment, o-ring seal, and certified performance match GE's factory specifications exactly.