Moen Bathroom Sink Faucet Cartridge

If you're experiencing problems with your Moen bathroom sink faucet, such as leaks, drips, or difficulty turning the handles, it's likely that the cartridge needs to be replaced. The cartridge is a small, cylindrical component that controls the flow of water through the faucet. It's a relatively simple repair that can be completed in about 30 minutes.

Tools and Materials You'll Need

Before you begin, gather the following tools and materials:

Phillips screwdriver
Adjustable wrench
New Moen cartridge
Plumber's putty (optional)

Step-by-Step Instructions

Once you have all of your tools and materials, follow these step-by-step instructions to replace the Moen bathroom sink faucet cartridge:

Turn off the water supply. There are two water supply valves located beneath the sink. Turn the handles clockwise to shut off the water.
Open the faucet. This will release any remaining water pressure in the faucet.
Remove the handle. Most Moen bathroom sink faucet handles are attached with a small screw. Use a Phillips screwdriver to remove the screw and pull the handle off.
Remove the cap. The cap is located beneath the handle. Use a Phillips screwdriver to remove the two screws that hold the cap in place. Pull the cap off.
Remove the cartridge. The cartridge is held in place by a retaining clip. Use a small screwdriver or needle-nose pliers to remove the clip. Pull the cartridge straight up to remove it.
Inspect the cartridge. Look for any signs of damage or wear. If the cartridge is damaged, it will need to be replaced.
Install the new cartridge. Insert the new cartridge into the faucet body. Push it down until it snaps into place.
Replace the retaining clip. Use a small screwdriver or needle-nose pliers to replace the clip that holds the cartridge in place.
Replace the cap. Place the cap over the cartridge and secure it with the two screws.
Replace the handle. Push the handle onto the faucet body and secure it with the screw.
Turn on the water supply. Open the water supply valves beneath the sink and check for leaks.

Tips

Here are a few tips to make the replacement process easier:

If you're having trouble removing the cartridge, try using a pair of pliers to grip it.
Be careful not to overtighten the screws when replacing the cap and handle.
If you're still having problems with your Moen bathroom sink faucet after replacing the cartridge, you may need to contact a plumber.