My bathroom sink stopper gave up in the most annoying way possible: it would not stay up. I would push the little lever and the plug would rise, then slowly sink back down like it was exhausted. Brushing my teeth became a one handed balancing act.

I assumed fixing it meant calling a plumber or replacing the whole drain assembly. It turned out the stopper itself just slides out, and a new one cost less than my lunch.

Know Your Stopper Type

There are two common kinds:

• Pop up stoppers lift and lower with a rod behind the faucet. These are the ones with the little lever on the back.
• Lift and turn stoppers twist to lock open or closed. No lever involved.

Both replace the same way, just with a different top piece.

Removing the Old Stopper

For a pop up stopper:

1. Reach under the sink and find the rod that connects the lever to the drain. There is usually a clip or a spring that holds the rod to the stopper’s tailpiece.
2. Unclip it, then lift the stopper straight out of the drain from above.
3. Some stoppers also have a small screw under the cap. If the cap spins but nothing lifts, look for the screw.

For a lift and turn stopper, you usually just grip the top and unscrew it counterclockwise, or lift it straight out.

Cleaning While It Is Out

Before you install the new one, take a look down the drain. The stopper being out is the perfect moment to pull out the hair and gunk that has been collecting on the crosspiece. It took me two minutes and the drain ran noticeably faster afterward.

Installing the New Stopper

Here is the part that used to confuse me: the new stopper has a small hole or slot at the bottom of its tailpiece, and the rod under the sink needs to catch that hole.

1. Drop the new stopper into the drain from above.
2. Under the sink, slide the rod through the hole in the stopper’s tailpiece, or hook the clip around it.
3. Test it from above: push the lever down and the stopper should close; pull it up and it should open.
4. If it does not close fully, loosen the rod’s adjustment nut and slide the rod a little farther, then retighten.

Picking the Right Replacement

Stopper sizes are mostly standard, but finishes vary. If you bring the old stopper to the hardware store, you can match both the size and the finish. I did not, and my new stopper is a slightly different chrome shade than the faucet. Nobody else has noticed, but I notice it every single day.

One thing worth doing while the stopper is out: screw a small brush or an old toothbrush into the drain opening and give the pipe a quick scrub. Future you will thank you at cleaning time.

📋 Quick Summary: Pop up stoppers unclip from the rod under the sink and lift straight out. Drop in the new one, hook the rod into its tailpiece hole, and adjust the rod length until the stopper opens and closes fully.