Replace Kitchen Faucet Cartridge
Created by Cheli
Step-by-step guide to replace a kitchen faucet cartridge, including preparation, removal, installation, and testing.
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Checklist Items (22)
Turn off water supply
Locate the shutoff valves under the sink and turn both hot and cold valves clockwise until they stop.
Shut off hot valve
Turn the hot water valve (usually on the left) clockwise.
Shut off cold valve
Turn the cold water valve (usually on the right) clockwise.
Plug the drain
Use a sink stopper, rag, or rubber plug to block the drain and prevent small parts from falling in.
Remove faucet handle
Depending on your faucet model, the handle may be held by a set screw, a hidden screw, or a lever mechanism.
Identify fastener type
Look for a small set screw on the handle base or a decorative cap hiding a screw.
Remove the screw
Use an Allen wrench or screwdriver to loosen and remove the fastener.
Lift off the handle
Gently wiggle and pull the handle straight off the faucet body.
Access the cartridge
After removing the handle, you may see a retaining nut or clip holding the cartridge in place.
Remove retaining nut or clip
Use an adjustable wrench to unscrew the nut, or pry off the clip with a flat-head screwdriver.
Note cartridge orientation
Take a photo or mark the alignment tabs so you can install the new cartridge the same way.
Remove old cartridge
Extract the cartridge from the faucet body; it may be stuck due to mineral buildup.
Apply penetrating oil
Spray a little penetrating oil around the cartridge base and let it sit for 5 minutes.
Tap gently
Lightly tap the cartridge with a rubber mallet to loosen corrosion.
Pull out the cartridge
Use a cartridge puller tool or pliers to grip the cartridge and pull it straight out.
Prepare new cartridge
Check that the replacement matches the old one in size and shape.
Lubricate O-rings
Apply a thin layer of plumber's grease to the O-rings on the new cartridge.
Verify fit
Compare the new cartridge to the old; ensure tabs and notches align.
Install new cartridge
Insert the new cartridge into the faucet body, aligning it as noted.
Insert cartridge
Push the cartridge straight in until it seats fully.
Secure retaining nut or clip
Tighten the nut or reinstall the clip to hold the cartridge in place.
Reattach handle
Place the handle back, fasten the screw, and replace any decorative caps.
Turn on water supply
Slowly open the hot and cold shutoff valves to restore pressure.
Check for leaks
Observe the base of the faucet and under the sink for any dripping water.
Operate faucet
Move the handle through its full range to ensure smooth flow and temperature control.
Clean up and maintain
Put away tools and wipe the work area.
Wipe down area
Use a clean cloth to remove any water or grease from the sink and countertop.
Store tools
Return the wrench, screwdriver, and cartridge puller to your toolbox.
Schedule periodic check
Mark your calendar to inspect the faucet every 6 months for early signs of wear.