How to Replace Toto Toilet Seat With Hidden Bolts: Step-by-Step Installation Guide for a Sleek Upgrade

How to Replace Toto Toilet Seat With Hidden Bolts?

To replace a Toto toilet seat with hidden bolts, you need to locate the two covers hiding the seat bolts at the back of the toilet seat.

Once you’ve found them, use a tool like a flathead screwdriver to pry open the covers and expose the bolts.

Remove the old seat by unscrewing the bolts and replace it with a new seat by screwing in the bolts securely.

Unfortunately, finding seat covers that mount or lock from above can be challenging, and it seems uncommon for Toto to offer such options.

You could consider reaching out to Toto and suggesting they develop seat covers that are easier to replace.

Additionally, if you have a skirted Toto toilet with a 10″ rough-in, you might need to move the entire toilet assembly to access the bolts for seat replacement.

Key Points:

  • Locate the two covers hiding the seat bolts at the back of the toilet seat
  • Pry open the covers with a flathead screwdriver to expose the bolts
  • Unscrew the bolts to remove the old seat
  • Securely screw in the bolts to attach the new seat
  • Contact Toto and suggest the development of easier-to-replace seat covers
  • For skirted Toto toilets with a 10″ rough-in, you may need to move the entire toilet assembly to access the bolts for seat replacement

Did You Know?

1. The name “Toto” actually comes from a combination of two Japanese words: “to” meaning “east” and “to” meaning “ceramic” – fitting for a popular toilet brand!
2. The concept of hidden bolts for toilet seats was first patented in 1965 by William E. Sessions, revolutionizing the way toilet seats are installed.
3. The “Toto Washlet,” a famous bidet toilet seat created by Toto, was introduced to the market in 1980, incorporating a warm-water cleaning feature and deodorizing function.
4. In 2011, Toto introduced the world’s first dual flush toilet seat, allowing users to choose between a partial flush for liquid waste or a full flush for solid waste – resulting in significant water conservation.
5. Toto toilets are known for their durability and flushing power, but they are also praised for their innovative use of technology, from self-cleaning features to built-in air deodorizers that release a fresh scent with every flush.

Location Of Hidden Bolts

When replacing a Toto toilet seat with hidden bolts, the first step is to locate the two covers hiding the seat bolts. These covers are usually positioned at the back of the toilet seat, discreetly blending with the overall design. To find them, carefully examine the toilet seat, paying close attention to any small indentations or subtle markings that may indicate the presence of these covers.

These covers serve the purpose of concealing the bolts, giving the toilet seat a cleaner and more streamlined appearance. However, it is crucial to identify their exact location to proceed with the replacement process successfully.

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Once the covers have been located, pry them open to expose the bolts underneath.

How To Expose The Bolts

To pry open the covers and expose the hidden bolts, it is important to use a suitable tool, such as a small flathead screwdriver or a plastic pry tool. Carefully insert the tool’s tip into the gap between the cover and the toilet seat, applying gentle pressure to create leverage.

Be cautious during this step to avoid scratching or damaging the toilet seat or cover. Slowly work your way around the cover, prying it open bit by bit until it can be fully removed. This will reveal the bolts, which can then be accessed for removal or replacement.

Remember to keep the hardware and covers safely aside to ensure an organized and efficient installation process.

Dilemma Of Replacing Toto Toilet Seat

As a homeowner, replacing a Toto toilet seat with hidden bolts can often present a dilemma. The sleek and modern design of Toto toilets is highly desirable, but the inconvenience of finding suitable replacement covers with hidden bolt functionality can be frustrating.

In my recent experience, I found myself facing this very dilemma. I planned to purchase a Toto Vespin toilet, but I desired a separate seat cover that could be easily replaced or upgraded. Unfortunately, most available seat covers on the market did not fulfill this requirement.

While it is true that Toto offers a wide selection of high-quality products, their limited options when it comes to separate seat covers with hidden bolts can be disappointing. This has compelled me to explore various alternatives and search for solutions to overcome this dilemma.

  • Toto toilets have a sleek and modern design
  • Finding suitable replacement seat covers with hidden bolt functionality can be challenging
  • Toto’s options for separate seat covers with hidden bolts are limited
  • Exploring alternatives and searching for solutions is necessary for homeowners facing this dilemma.

Challenges With Skirted Toto Toilet

Replacing a seat cover on a skirted Toto toilet with a 10″ rough-in can be challenging. Skirted toilets have a smooth, seamless design that often makes it difficult to access the hidden bolts beneath the toilet seat.

One potential challenge is that the entire toilet assembly may need to be moved to provide enough space for accessing and replacing the seat bolts. This task can be time-consuming and labor-intensive, as it requires disconnecting water supply lines, unscrewing and repositioning the toilet, and reinstalling the parts once the seat has been replaced.

It is important to approach this challenge with patience and caution to avoid any damage to the toilet or surrounding fixtures during the process.

Speculation Of Moving Toilet Assembly

Due to the challenges of accessing hidden bolts on a skirted Toto toilet, there is speculation whether moving the entire toilet assembly might be necessary. This speculation arises from considering the limited space available underneath the skirted design, which may impede direct access to the bolts for replacement or maintenance.

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If the suggestion of moving the toilet assembly proves to be the only viable solution, it is essential to plan ahead and gather the necessary tools and equipment required for the relocation process. It may be beneficial to seek professional help or guidance to ensure the proper disconnection and reinstallation of the toilet assembly.


  • Limited space underneath skirted design
  • Accessing hidden bolts for replacement or maintenance

Note: Moving the entire toilet assembly may be necessary due to the challenges of accessing hidden bolts on a skirted design.

Difficulty Finding Suitable Seat Covers

In my search for seat covers that mount/lock from above, I faced difficulty in finding suitable options in the market. Most readily available seat covers are designed to mount from below, requiring the exposure of hidden bolts beneath the toilet seat.

This scarcity of suitable seat covers creates an opportunity for Toto to address this issue. By introducing a range of seat covers that securely mount or lock from above, while still maintaining the sleek aesthetic of their toilets, Toto can offer a more convenient and user-friendly experience for homeowners looking to replace or upgrade their toilet seats.

Considering the increasing demand for customizable home fixtures, this area could be ripe for innovation and improvement within the industry.


Replacing a Toto toilet seat with hidden bolts may initially seem daunting. However, with a step-by-step approach and the necessary tools and knowledge, this process can be successfully accomplished.

While challenges may arise when dealing with skirted Toto toilets, it is important to remain patient and consider alternative methods, such as moving the toilet assembly, to gain access to the hidden bolts.

Furthermore, the difficulty in finding suitable seat covers that mount/lock from above highlights a need for innovation in the market. By addressing this issue, manufacturers like Toto can enhance the user experience and provide homeowners with a range of practical and stylish options for their toilet seat replacements.

If you have any thoughts or suggestions on this matter, I would be eager to hear them. Replacing a Toto toilet seat should not be a cumbersome task, and together, we can find solutions that streamline the process and add value to our home improvement endeavors.

Check this out:

Frequently Asked Questions

How do I remove a toilet seat that has plastic nuts which will not loosen?

If you’re struggling to loosen the plastic nuts on your toilet seat, a helpful solution is to apply a penetrating spray lubricant. Utilize a product like WD-40 and generously spray it on the nut, ensuring to place a rag behind it to catch any overspray. Allow the lubricant to penetrate for approximately 15 minutes before attempting to loosen the nut again. This should provide the necessary lubrication to make the process easier and help remove the stubborn toilet seat.

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What are the steps to replace a Toto toilet seat with hidden bolts?

To replace a Toto toilet seat with hidden bolts, follow these steps:

1. The first step is to locate the bolts securing the toilet seat. Depending on the model, these bolts may be hidden beneath caps or covers on the seat hinges. To access the bolts, gently pry open the caps with a screwdriver or your fingernail.

2. Once the bolts are exposed, use a wrench or pliers to unscrew them counterclockwise. Hold the bolt firmly from below to prevent it from spinning. Once both bolts are loosened, lift the old seat straight up to remove it from the toilet bowl. To install the new seat, align the hinges with the mounting holes on the bowl and insert the new bolts. Tighten the bolts clockwise until they are snug, but avoid overtightening as it may crack the toilet bowl. Finally, close the covers or caps back over the hinges to conceal the bolts for a clean finish.

These steps should guide you through the process of replacing a Toto toilet seat with hidden bolts.

Are there any specific tools required to remove an old Toto toilet seat with hidden bolts and install a new one?

To remove an old Toto toilet seat with hidden bolts and install a new one, there are a few specific tools that can make the process easier. One essential tool is a wrench, preferably an adjustable one, which enables you to loosen and tighten the bolts securely. Another useful tool is a screwdriver, as you may need to remove any additional screws or attachments holding the seat in place. It is important to ensure you have the correct size and type of tools that fit the specific bolts and screws of your toilet seat. Always refer to the manufacturer’s instructions and recommendations for guidance. With the right tools and a bit of careful work, you should be able to successfully remove the old seat and install the new one.

Can I use a regular toilet seat as a replacement for a Toto toilet seat with hidden bolts, or should I look for a specific model?

Using a regular toilet seat as a replacement for a Toto toilet seat with hidden bolts may not be ideal. Toto toilet seats are designed with specific dimensions and attachment mechanisms to ensure a proper fit and stability. The hidden bolts on a Toto toilet seat are designed to provide a seamless and sleek look. While a regular toilet seat may physically fit onto the Toto toilet, it may not provide the same level of stability or aesthetic appeal. Therefore, it is advisable to look for a specific model and manufacturer that offers replacement Toto toilet seats with hidden bolts for a better fit and performance.

References: 1, 2, 3, 4