GE GXK255TBN water filter Parts

This parts list is for the GE GXK255TBN faucet water filter system, not a GE refrigerator. For a refrigerator, you must use the exact filter type specified for that refrigerator model. For the GXK255TBN system, use the correct replacement filter set designed for this unit.

How to choose the right filter (refrigerator vs GXK255TBN)

• Refrigerator: match the refrigerator model number and the filter type it calls for.
• GXK255TBN faucet system: match the GXK255TBN system filter set.
• Do not buy by “looks similar”; connections and sealing surfaces must match.
• Avoid forcing a filter into a head; that commonly causes leaks.
• After any filter change, flush water through to clear carbon fines.

Recommended replacement for GXK255TBN

For this GE GXK255TBN faucet filtration system, the correct replacement is the water filtration system water filter set FQK2J. Using the matched set maintains proper fit, flow, and filtration performance.

Quick comparison

Item you are filtering	What must match	What can go wrong if it does not
GE refrigerator	Refrigerator model’s specified filter type	Not fitting, leaking, poor flow, indicator not resetting
GE GXK255TBN faucet system	GXK255TBN filter set	Leaks at the manifold, reduced flow, poor filtration

Why it matters

Water filters are both a filtration component and a sealing component. The correct cartridge protects the water system and prevents drips at the filter head, tubing connections, and faucet.

Last updated: February 2026

To replace the filter on a GE under-sink system like model GXK255TBN, shut off the cold-water supply, relieve pressure at the faucet, swap the cartridge, then turn water back on and flush until the water runs clear and steady.

Before you start

• Close the cold-water shutoff valve feeding the filter system
• Open the filtered-water faucet to relieve pressure and drain the line
• Place a towel or shallow pan under the filter housing to catch drips
• Wash hands and keep the new cartridge sealed until you are ready to install
• If your system uses push-to-connect tubing, avoid pulling on the tubing itself

Replacement steps (typical under-sink filter)

1. Turn off the water supply to the filter.
2. Open the filtered-water faucet; let flow stop.
3. Remove the old cartridge (or open the housing, depending on your design).
4. Install the new cartridge, fully seated and aligned.
5. Reassemble and hand-tighten the housing or cap (do not overtighten).
6. Turn the water back on slowly.
7. Check for leaks for 2 to 5 minutes.
8. Flush the system until water runs clear; most under-sink filters need several minutes of flushing.

If water flow is weak or the system makes noise after replacement

These symptoms are usually trapped air or a partially opened valve.

• Run the filtered faucet in short bursts (10 to 15 seconds on, then off) to purge air
• Confirm the shutoff valve is fully open
• Reseat the cartridge; a mis-seated cartridge can restrict flow
• Inspect tubing for kinks; replace damaged lines with pe tubing 3/8" x 4ft - blue WS07X23609 or pe tubing 3/8" x 4ft - yellow WS07X23611
• If you see dripping at a connection, inspect the fitting and consider replacing the connector such as 3/8" faucet union treaded 7/16" WS22X23612

Common parts you may need (by symptom)

Symptom	Most likely area	Part that often helps
Leaks at a threaded connection	Union or T-fitting	GE 3/8 t-union treaded 9/16male & 9/16fe WS22X23741
Kinked or brittle line	Tubing run	Pe tubing 3/8" x 4ft - blue WS07X23609
Drips at faucet connection	Faucet union	3/8" faucet union treaded 7/16" WS22X23612

Why it matters

A properly installed cartridge protects water quality and keeps pressure stable. Flushing after replacement clears carbon fines and trapped air so you get clean, consistent flow from the filtered-water faucet.

Last updated: February 2026

A GE GXK255TBN faucet water filter system typically lasts 10 to 15 years as a housing and faucet assembly when it is installed correctly and maintained; the replaceable filter cartridges are changed on a regular schedule. Most “end of life” issues are leaks, restricted flow, or worn fittings.

What usually determines lifespan

• Water quality (sediment, hardness, chlorine level)
• How often the filter is used (daily gallons filtered)
• On time cartridge changes (clogged cartridges strain the system)
• Proper tubing support and no kinks in the 3/8-inch lines
• Leak free connections at the faucet union and T-union

Typical replacement intervals (system vs. consumables)

Item	What it is	Typical replacement timing
Filter system housing and faucet	The permanent hardware	10 to 15 years
Filter cartridges	The consumable media	Every 3 to 6 months (or when flow drops)
Tubing and fittings	Connections that can wear or crack	Replace when leaking, brittle, or damaged

Signs your system is nearing replacement

• Persistent leaks at fittings even after reseating and tightening
• Cracked or cloudy plastic around the manifold or connections
• Noticeably reduced flow that returns only briefly after cartridge changes
• Drips from the faucet body that do not stop

If you are troubleshooting leaks or flow problems, the most common service parts for this model include the filtration manifold WS19X21082, the faucet WS10X23546, and the water filtration system water filter set FQK2J.

Why it matters

Replacing cartridges on schedule protects water taste and flow, and it also reduces stress on the GXK255TBN manifold, tubing, and faucet connections, which helps the system reach its full service life.

Last updated: March 2026