Replacing a toilet seat cover takes about 15 minutes and requires only a screwdriver
A toilet seat cover is the padded or cushioned ring that sits on top of the toilet bowl rim. It is separate from the seat itself—the hard plastic or wood part that closes over the bowl. To replace just the cover, you unscrew two bolts underneath the seat, slide the old cover off, and slide a new one on. You do not need to remove the entire seat or touch the bowl.
This is one of the easiest bathroom repairs you can do at home. The bolts are usually finger-tight or require only a Phillips screwdriver. If your cover is cracked, stained, or no longer cushioned, a new one costs between $15 and $40 and takes less time than a phone call to a plumber.
Key Takeaways
- Toilet seat covers are held on by two bolts underneath the seat that you can loosen by hand or with a Phillips screwdriver.
- You do not need to remove the entire seat or turn off the water—just lift the seat and unscrew the bolts from underneath.
- New covers slide onto the same bolts, so you only need to measure your toilet bowl to buy the right size.
- If the bolts are stuck, spray them with penetrating oil and wait 10 minutes before trying again.
- Measure your toilet bowl from the front of the rim to the back, and from side to side, to match the new cover to your seat.
What you need before you start
Gather these items before you begin: a Phillips screwdriver (or a flathead if the bolts have a slot instead of a cross), a new toilet seat cover that matches your bowl size, and a damp cloth to wipe the seat clean. If the bolts are old or corroded, have a can of penetrating oil like WD-40 on hand.
Measure your toilet bowl before you buy a new cover. Use a tape measure or ruler to find the distance from the front rim to the back rim (front to back), and the distance from the left rim to the right rim (side to side). Most toilet bowls are either elongated (about 18 to 19 inches front to back) or round (about 16 to 17 inches). The cover package will list which shape it fits.
Locate and loosen the bolts underneath the seat
Lift the toilet seat all the way up so it stands vertical. Look underneath where the seat connects to the bowl rim. You will see two bolts—one on each side—sticking down through the rim. These bolts hold the seat and cover in place.
Try to turn each bolt counterclockwise by hand first. Many bolts are hand-tight and will loosen without a tool. If they do not budge, use your Phillips screwdriver to turn them. Turn slowly and steadily; do not force them or you may strip the bolt head. If a bolt is stuck, spray it with penetrating oil, wait 10 minutes, and try again.
Remove the old cover and slide on the new one
Once both bolts are loose enough to turn by hand, unscrew them the rest of the way and set them aside in a safe place—you will use them again. The old cover should now slide off the seat. If it is stuck, gently wiggle it side to side as you pull it away from the seat.
Wipe the seat clean with a damp cloth and let it dry. This is a good time to clean the area since the seat is exposed. Slide the new cover onto the seat, aligning the two bolt holes on the cover with the two bolts sticking up from the seat. The cover should sit flat and centered on the rim.
Tighten the bolts and test the cover
Push the bolts back through the holes in the new cover. Turn each bolt clockwise by hand until it is snug. Do not over-tighten—you only need enough pressure to hold the cover in place. If you use a screwdriver, turn gently and stop as soon as you feel resistance.
Lower the toilet seat slowly and sit on it gently to test. The cover should not shift or rock side to side. If it does, lift the seat again and tighten the bolts a bit more. Once the cover is stable, you are done.
What to do if bolts are corroded or broken
If a bolt breaks or will not tighten, you may need to replace it. Most hardware stores sell toilet seat bolt kits for $5 to $10 that include new bolts, washers, and nuts. Remove the old bolt completely and install the new one following the same steps as above.
If the bolt head is stripped (the screwdriver spins without turning the bolt), try using a rubber band. Place a wide rubber band over the stripped bolt head, press your screwdriver firmly into it, and turn. The rubber grips the bolt and may give you enough traction to loosen it. If that does not work, use a bolt extractor tool or take the seat to a hardware store and ask staff to remove it for you.
Frequently Asked Questions
Can I replace just the cover without removing the whole seat?
Yes. The cover is separate from the seat and held on by two bolts underneath. You only need to loosen those bolts, slide the old cover off, and slide the new one on. The seat itself stays attached to the toilet.
What if the bolts are stuck and will not turn?
Spray the bolts with penetrating oil like WD-40 and wait 10 minutes. The oil will loosen corrosion. Then try turning them again with your screwdriver. If they still will not budge, use a bolt extractor tool or ask a hardware store employee for help.
How do I know what size cover to buy?
Measure your toilet bowl from front to back and side to side. Most bowls are either round (about 16 to 17 inches front to back) or elongated (about 18 to 19 inches). The cover package will say which shape it fits. Bring your measurements to the store if you are unsure.
Do I need to turn off the water to replace the cover?
No. The cover is not connected to any water lines or plumbing. You only need to loosen two bolts and swap the cover. The water stays on the whole time.
What if my new cover does not fit?
Check that you bought the correct shape—round or elongated. If the shape is right but the cover is too loose or too tight, return it and try a different brand. Covers vary slightly in size even within the same shape category.