How To Replace A Bathroom Faucet Stem

How to Replace a Bathroom Faucet Stem

A leaky faucet is not only annoying but can also waste a significant amount of water. If you're dealing with a dripping bathroom faucet, chances are the problem lies with the faucet stem. Replacing a faucet stem is a relatively simple and inexpensive repair that can be completed in under an hour.

Gather Your Materials

Before you begin, you'll need to gather the following materials:

Replacement faucet stem
Adjustable wrench
Screwdriver
Valve seat wrench (optional)

Turn Off the Water Supply

The first step is to turn off the water supply to the faucet. This is typically done by closing the shut-off valves under the sink.

Remove the Faucet Handle

Locate the set screw on the base of the faucet handle and use a screwdriver to remove it. Pull the handle straight up to remove it from the stem.

Remove the Stem

Use an adjustable wrench to loosen the packing nut that holds the stem in place. Once the nut is loose, you can pull the stem straight out of the faucet body.

Inspect the Valve Seat

Once the stem is removed, inspect the valve seat for any damage or debris. If the seat is damaged, it will need to be replaced. You can use a valve seat wrench to remove and replace the valve seat.

Install the New Stem

Apply a thin layer of plumber's grease to the new stem and insert it into the faucet body. Hand-tighten the packing nut until it is snug.

Install the Handle

Place the faucet handle back onto the stem and secure it with the set screw. Turn the water supply back on and check for leaks.

Additional Tips

If you're not sure what type of faucet stem you need, take the old one to a hardware store and ask for a replacement.
Be careful not to overtighten the packing nut, as this can damage the stem.
If you're still having trouble replacing the faucet stem, consult a plumber.