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Plastic RV Toilet Seats Are Lame. Here’s How To Easily Replace Yours.

(Camp Addict does NOT accept payment from any company to review or endorse their products.)

Kelly Headshot

By Kelly Beasley

Installing a new RV toilet seat is one of many easy improvements new camper owners make.

This is because many RVs come with plastic toilets harboring flimsy cheap toilet seats.

Flush toilet paper Featured

The flimsy plastic feel is made worse by the unconventional shape of the seat.

Many toilets in recreational vehicles are not the same size or shape as conventional toilets.

This causes people to want to make it as similar to a home toilet as possible.

Some even go to the length of replacing the whole toilet, which is another easy option and the cost isn't astronomical.

But replacing a seat takes way less money and effort.

Let's see just how easy replacing a toilet seat in your rig is.

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Our favorite way to find camping locations.

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  • Pay $0 extra booking fees

Can I Replace My RV Toilet Seat?

Heck yes, you sure can replace your RV toilet seat!

You're free to purchase anything that fits your old RV toilet or your new RV toilet.

It's just a matter of finding the correct size. After that it's a straightforward installation.

All it takes is lifting the hinges in the back, unscrewing the screws, fitting on the right-sized seat, and re-screwing it together.

It couldn't be easier.

Who Makes RV Toilet Seats?

There are a few manufacturers that make RV toilets and toilet seats.

The two most known companies are arguably the following:

  • Thetford
  • Dometic

Even if you have one of them in your RV, it might not be a high-quality product.

Both of these manufacturers do make china/porcelain as well as plastic toilets.

Most often, what comes stock in your new (or used) RV is a plastic one.

That said, can you replace your RV toilet seat with any standard toilet seat? It's likely the answer is yes.

It depends on the shape of your toilet.

Where Can I Buy A New RV Toilet Seat?

Amazon is a great place to buy a new RV toilet seat. Also, Camping World has some different options.

Depending on the shape and dimensions of your toilet, you may not have to get a seat made specifically for RV toilets.

Kelly's RV toilet

Can you Put A Regular Toilet Seat On An RV Toilet?

Yes, you can sometimes put a regular seat on your camper toilet (standard RV toilet seats).

This only applies when you have a standard-sized toilet (or close to it) in your motorhome or trailer.

RVs often come with a smaller sized throne than those in home settings.

This is due to the fact that campers are small spaces.

The less room things take, the bigger it makes the area feel.

How Do I Know I Can Use A Regular Toilet Seat On My RV Toilet?

The answer to this one is easy. You need to size your existing toilet seat, measuring the length and width.

The tabs for the screws also need to be the same distance apart as your toilet's holes are.

If it matches (or is close to) the standard measurements of a typical round or elongated toilet, you're in luck.

If not, you'll have to find one that has similar dimensions.

Dometic 310 RV toilet seat open

Are RV Toilet Seats Universal?

No, RV toilet seats are not universal in size. Like regular toilet seats, there are many different sizes.

Rigs are small spaces, so the toilets are smaller than others.

They can also come with different features, such as having a slow-closing lid.

Additionally, they come in a couple of different styles.

  • First, you have the ones that connect to the toilet like standard RV toilets do via the two tabs in the back edges of the toilet bowl.
  • Second, you have the kind with a housing on the backside. This housing covers a water valve. You could get a 'regular' toilet seat if that's what you originally had, but then you're going to have the water part sticking up in the back. If that doesn't bother you, go for it.

What Size Is An RV Toilet Seat?

RV toilet seats come in round and elongated shapes.

That said, they are not always the same exact size as you find in conventional toilets.

Then again, sometimes they are the same as conventional toilet sizes.

The bottom line is it's up to you to do your measuring to see if that slow-closing toilet cushioned seat by Kohler will work for your RV's bathroom toilet.

RV Toilets

What Are RV Toilet Seats Made Of?

  1. Plastic: When you have a cheap one, it's often a plastic seat and plastic lid. This type tends to not be comfortable, can form small cracks, and yellows over time.
  2. Wood: The wood toilet seat falls into this category. It's not as lightweight as plastic but lasts longer and has better durability in the end. Usually, the wood is enameled.
  3. Porcelain/China: It's pretty rare to find an RV toilet with a porcelain seat. Why? Because porcelain, china, and ceramic are fragile. Putting a porcelain (or similar) lid in a moving RV might end up with repairs needed or just a broken seat. Instead, wood is the preferred 'nice' material for a camper toilet seat.

How To Measure Your Toilet Seat

Keep in mind that different types of RV toilets are different in size.

This is even the case with home toilets.

The seat you buy to replace it might not be the same size as the bowl measurements.

Very close can and will work. That said, the bolt width MUST be identical.

Cloth tape measure

Measuring Instructions:

  • Width: Measure the bowl at its WIDEST point, outside to outside of the edges of the toilet bowl.
  • Length: Measure from the bolts where the seat attaches to the very center front of the bowl.
  • Bolt Width: At the back of the toilet, measure from the center of the very right bolt hole to the center of the very left bolt hole.

What Are The Best RV Toilet Seats?

If you're looking for an RV replacement toilet seat, we have a few good ones for you to consider.

Best Soft Close Seat

Dometic 310

Dometic RV toilet seat

This one is a reasonable price and will fit many RV toilets. It will definitely fit if you have the Dometic 310, with a round toilet bowl.

This toilet seat is not compatible with elongated toilet bowls (like that of a Dometic 320 toilet).

It also features soft-close technology, so no more slamming toilet disruptions in such a small space.

Dimensions: 20 x 14.5 inches

Best Raised Toilet Seat

HealthSmart Raised Toilet Seat Riser

Raised Toilet Seat Riser

This seat type is necessary for those having difficulty bending down to the height of short RV toilets.

You cannot close the toilet seat lid when using this product. There's also no assembly required and you don't have to remove your existing seat.

If you don't like this idea, consider building a platform to put your toilet on.

Dimensions: 15 x 15 inches

Best Budget Wood Seat

Mayfair Kendall Slow-Close Wood Seat

Replacement toilet seat

This seat, much like the Dometic, is made from wood and has a soft-close seat and lid.

It's sized a bit differently, but it's about $15 less.

Dimensions: 16.8 x 14.3 inches


Family sitting outside motorhome

Your RV bathroom might not have the same luxuries that your home bathroom does.

It's a very tight space, so manufacturers save space by using things like a round toilet seat instead of an elongated toilet seat.

You can replace your RV toilet seat if you want to, but you need to keep the seat pretty close in size to the bowl.

If you can find a regular, say American Standard or similar brand toilet seat that fits well enough, you can replace it with that.

All you need to know is the dimensions of your toilet seat or bowl and match it as closely as you can.

Then, you can get yourself a nice wood seat, maybe featuring soft-close technology to improve your existing toilet!

Kelly Headshot

As a seasoned and passionate RVing expert, I have dedicated myself to living the full-time RV life for over 5.5 years, immersing myself in the unique quirks and joys of the boondocking lifestyle and gaining a wealth of knowledge and experience along the way. In December 2020, my business partner and I made the transition to part-time RVing, but in January 2023, we hit the road once again, this time in our trusty vans. My mission is to help others embrace the RVing lifestyle with confidence and excitement, armed with the knowledge and resources needed to make the most of their adventures. I believe that the more you know, the more you can truly appreciate and enjoy the freedom and flexibility of the open road. Join me on this journey and let's make some unforgettable memories.

  • So, we are replacing the Dometic 310 toilet seat with a standard seat and it fits fine. However, when the original Dometic seat is removed, the cover over the piping and valve at the top, in the back of the toilet is showing. Is there an easy way to cover this valve?

    • Hi Mick,

      My apologies if I am misunderstanding, but the backstop (cover) of the valve in the back should come off on its own as its own part. Then you just re-install it with the new toilet lid. If it was damaged, or you don’t have it anymore, you can order a new one from either Camping World, Amazon, or Walmart. I found it at Walmart listed under “Dometic 385312111 Kit”. Hope this helps! If I misunderstood what you were speaking of please let us know. Cheers!

  • Thank you for this informative and encouraging article! One of the hinges broke on our RV toilet seat and the going price for a dometic replacement is $170!!😳… I Nearly the cost of replacing the entire comode ml$f$took measurements and followed one of your Amazon links to a $35 alternative that was delivered same day! Quick install and works fine…

    • Hi Carol,

      That’s great to hear! And we always so appreciate you using our links to get your products. EVERY bit helps. $35 is much better than 170! And less waste, too.

      Thank you for the comment!

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