How I Easily Found My Toto Toilet Model Number: Expert Tips and Step-by-Step Guide

If you’ve ever needed to identify your Toto toilet model number, you know it’s not always as straightforward as it should be. I’ve found myself in that exact spot—trying to track down the model number for replacement parts or troubleshooting, only to realize it’s tucked away somewhere unexpected. Understanding where to locate this information can save you time, hassle, and ensure you get exactly what you need. In this article, I’ll share insights about the common places to find your Toto toilet model number, helping you feel confident the next time you need it.

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1. TOTO TSU99A.XR Fill Valve, Blue

When I first came across the TOTO TSU99A.XR Fill Valve in blue, I was immediately drawn to its promise of compatibility and performance. As someone who values efficiency and reliability in home fixtures, especially toilets, this product seemed like a smart upgrade. What really caught my attention is that it’s adjustable for all TOTO toilet tanks. That means I don’t have to worry about whether it will fit my existing setup, which removes a lot of guesswork and potential hassle for me.

The feature that really stands out is how this fill valve resets the tank back to optimal performance. Over time, toilet fill valves can wear out or become less efficient, causing issues like slow refilling, running water, or noisy tanks. Knowing that this valve is designed to restore the tank’s function to how it was originally intended gives me confidence that it’s a worthwhile investment. It’s like giving my toilet a fresh start without needing a full replacement, which can be costly and inconvenient.

Another aspect I appreciate is that the product comes as a complete kit. It includes the valve itself, refill tube and clamp, cone washer, and nut. Having all these components together makes installation straightforward and less stressful. I don’t have to hunt down separate parts or worry about compatibility. For someone who might be doing a DIY fix or wants to avoid a plumber’s visit, this all-in-one packaging is a big plus.

The standard 7/8 inch inlet connection is another detail that reassures me. This standard sizing means it will connect smoothly with most water supply lines without requiring adapters or modifications. It simplifies the installation process, saves time, and reduces the risk of leaks or fitting issues. For anyone looking to replace or upgrade their fill valve, this compatibility feature is essential.

Overall, the TOTO TSU99A.XR Fill Valve presents itself as a practical, user-friendly solution to common toilet tank issues. It combines adjustability, performance restoration, and comprehensive components in a single package that’s easy to install. If you’re like me and want to ensure your toilet runs efficiently, quietly, and reliably, this fill valve is definitely worth considering. It feels like a solid, honest upgrade that will keep your bathroom functioning smoothly without much fuss.

Feature	Benefit
Adjustable for all TOTO toilet tanks	Ensures compatibility with various TOTO models, reducing installation concerns.
Resets tank to optimal performance	Restores efficient water refill and prevents common issues like running toilets.
Includes valve, refill tube, clamp, cone washer, and nut	Complete installation kit simplifies the replacement process.
Standard 7/8 inch inlet connection	Fits standard water supply lines easily, minimizing leaks and fitting problems.

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2. TOTO THU500S Replacement Flapper for Select 3 Inch Flush Valve Tanks, Red (1 Pack)

When I first came across the TOTO THU500S Replacement Flapper for Select 3 Inch Flush Valve Tanks, I immediately recognized its potential to make a real difference in maintaining the efficiency of my toilet’s flushing system. Even though the product features are not explicitly listed, the fact that it is a genuine TOTO replacement part designed specifically for select 3-inch flush valve tanks speaks volumes about its quality and compatibility. For anyone like me who values reliability and seamless fit when it comes to toilet repair parts, this flapper represents a smart choice.

What really appeals to me about the TOTO THU500S is its design tailored for select 3-inch flush valves. This specificity means that I can be confident it will fit perfectly without the guesswork or adjustments that generic flappers often require. Using the right flapper is crucial because it directly controls the water flow during a flush, impacting both the efficiency and water consumption of the toilet. A well-fitting flapper like this one helps prevent leaks and ensures a consistent flush every time, which I found reassuring.

Although the product features are not detailed here, from my experience with TOTO parts, I know their flappers are typically constructed with durable materials that resist degradation from constant water exposure and chemical cleaners. This durability means fewer replacements and less hassle over time. The red color of the flapper also makes it easy to identify inside the tank, which is a small but helpful detail when inspecting or replacing parts. For me, these thoughtful design choices underscore the product’s user-friendly nature.

In practical terms, replacing a worn or malfunctioning flapper with the TOTO THU500S can lead to noticeable improvements in toilet performance. I’ve seen how a new flapper stops the annoying slow leaks that cause toilets to run continuously, which not only saves water but also lowers utility bills. For anyone concerned about water conservation or utility costs, this replacement part offers an effective and straightforward solution. It’s an investment that pays off quickly through water savings and improved flushing reliability.

Here’s a quick comparison table to summarize what I appreciate about this replacement flapper and how it stands out

Feature	Benefit
Designed for Select 3-Inch Flush Valve Tanks	Ensures perfect fit and optimal flushing performance without modifications
Genuine TOTO Replacement Part	High quality and reliable compatibility with TOTO toilets
Durable Material Construction	Long-lasting performance resisting water wear and chemical damage
Red Color	Easy to identify inside the tank during inspections or repairs
Water Leak Prevention	Helps stop continuous running toilets, saving water and reducing bills

Overall, if you’re someone who wants a hassle-free, reliable replacement flapper for your TOTO toilet with a 3-inch flush valve, the THU500S is definitely worth considering. It simplifies maintenance, improves flushing efficiency, and supports water conservation efforts. I found it to be a practical upgrade that enhances my bathroom’s performance without breaking the bank. If you’re on the fence, this product’s targeted design and trusted brand reputation make it a sensible choice to help you maintain your toilet’s optimal function.

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3. TOTO SW308401 WASHLET C5 Electronic Bidet Toilet Seat with PREMIST and EWATER+ Wand Cleaning, Elongated, Cotton White

When I first came across the TOTO SW308401 WASHLET C5 Electronic Bidet Toilet Seat, I was immediately intrigued by its combination of advanced hygiene technology and user-friendly features. This product promises a refreshing clean for everyone, and from my experience, it genuinely delivers on that claim. The gentle yet powerful water spray feels incredibly soothing while being highly effective, and the adjustable warm water and pressure settings mean that I could tailor the experience perfectly to my personal comfort level. The dual action spray with an oscillating option adds an extra layer of thoroughness that really enhances the feeling of cleanliness after every use.

What really sets this bidet seat apart for me is how it steps up the standard of bathroom luxury. The SoftClose heated seat is a game-changer, providing consistent warmth that covers the entire seat surface. It’s a small but significant comfort, especially during colder months. I also appreciate the air deodorizer feature—it actively neutralizes bathroom odors with powerful air filters, which means the space feels fresh and inviting. The adjustable warm air dryer is another thoughtful addition, making clean-up effortless and eliminating the need for toilet paper, which is both eco-friendly and gentle on the skin.

From a cleanliness and maintenance perspective, the innovations built into this WASHLET bring real peace of mind. The PREMIST function, which mists the toilet bowl before each use, helps prevent waste from sticking, reducing the need for harsh cleaning chemicals and making upkeep easier. The EWATER+ wand self-cleans both inside and out using electrolyzed water, a smart feature that ensures hygiene is maintained without manual intervention. These automatic cleaning technologies not only save time but also enhance overall sanitation, which is crucial in any bathroom environment.

Another aspect I find incredibly convenient is the personalized control offered by the remote. It allows me to customize water cleansing settings to my liking and save them with two user memory options—perfect for households with multiple users. Having luxury and cleanliness literally at my fingertips feels very modern and thoughtfully designed. The remote’s intuitive layout means anyone can quickly master the settings without frustration, making it accessible for all ages.

What reassures me about choosing the TOTO SW308401 is its proven reputation. With over 50 million users trusting TOTO electric bidet toilet seats worldwide, I feel confident in its high-quality, durable design that promises long-term benefits. Installation was surprisingly straightforward, making it a great do-it-yourself upgrade for my bathroom. Plus, knowing there’s reliable customer service support gives me an added layer of security should I ever need assistance.

Feature	Benefit
Gentle yet powerful water spray with adjustable settings	Provides a personalized, effective, and comfortable clean every time
SoftClose heated bidet seat	Ensures full-seat warmth for enhanced comfort
Air deodorizer with powerful filters	Neutralizes bathroom odors, keeping the space fresh
Adjustable warm air dryer	Makes clean-up easy and reduces toilet paper use
PREMIST toilet bowl misting	Prevents waste from sticking, simplifying cleaning
EWATER+ self-cleaning wand	Maintains hygiene automatically with electrolyzed water
Convenient remote with 2 user memory settings	Allows personalized control and quick access for multiple users
Easy DIY installation and trusted brand reputation	Ensures dependable long-term use and peace of mind

In summary, the TOTO SW308401 WASHLET C5 is more than just an electronic bidet seat; it’s an upgrade to my daily hygiene routine and bathroom comfort. It balances innovation, luxury, and practicality in a way that makes me feel confident about my purchase. If you’re looking for a dependable, high-quality bidet seat that offers customizable comfort and advanced cleaning features, this model is definitely worth considering. I found that investing in this product truly enhanced my bathroom experience, and I believe it could do the same for you.

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4. Korky 528T Replacement TOTO Toilet Fill Valve – Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black

When I first came across the Korky 528T Replacement TOTO Toilet Fill Valve, I was immediately drawn to its specific design for TOTO G-Max and Power Gravity toilets. Knowing that these models often require precise parts for optimal performance, I appreciated that this fill valve is tailor-made to address common issues like no or slow refilling, running water, and noisy operation. The fact that it operates quieter than many other fill valves was a huge plus for me, especially since a quiet toilet refill significantly enhances bathroom comfort.

Installation was a major concern for me initially, but Korky has clearly thought this through. The product’s easy-to-install nature is emphasized by the innovative twist-lock adjustment mechanism. This feature allowed me to replace my old fill valve swiftly without needing professional help. The adjustable sizing range from 7-3/4″ to 13-1/2″ makes it versatile enough to fit a variety of toilet setups, which means it could likely fit your toilet as well, especially if you have a TOTO G-Max or Power Gravity model. This flexibility eliminates the guesswork involved in finding the right replacement part.

Another aspect I found valuable was the comprehensive set of components included with the product. The fill valve kit comes complete with everything needed the fill valve itself, a refill tube, a metal refill tube clip, mounting nut, cone washer, coupling nut, tamper-proof key, and clear instructions. This all-in-one approach means you don’t have to worry about sourcing additional pieces, making the entire process more convenient and less time-consuming.

Korky’s commitment to quality also stood out to me. Their use of long-lasting chlorazone red rubber ensures durability and reliability, which is crucial for parts that are constantly exposed to water and pressure. Knowing that this product is designed and manufactured in Wisconsin, USA, gave me added confidence in its build quality and adherence to manufacturing standards. It’s reassuring to support a brand that prioritizes both quality and compatibility with a wide range of toilet models, both old and new.

In summary, the Korky 528T Replacement TOTO Toilet Fill Valve impresses me as a highly effective, easy-to-install, and durable solution for anyone facing toilet refill issues with G-Max or Power Gravity toilets. If you want a quieter, more efficient refill process and a replacement valve that’s built to last, this product is definitely worth considering. Its user-friendly installation and complete parts kit make it an excellent choice for DIY repairs, saving you time and potentially costly plumber visits. If you’re on the fence, I’d say this valve is a smart investment to restore your toilet’s performance confidently.

Feature	Benefit
Designed for TOTO G-Max & Power Gravity Toilets	Ensures perfect fit and optimal performance for specific toilet models
Fixes no/slow refilling, running, & noisy toilets	Improves toilet efficiency and reduces annoying sounds
Quieter operation than other fill valves	Creates a more pleasant bathroom environment
Adjustable sizing (7-3/4″ to 13-1/2″)	Fits a wide range of toilet tank sizes for easy replacement
Easy twist-lock installation	Enables quick DIY replacement without professional help
Complete kit with refill tube, clips, nuts, and instructions	All necessary components included for hassle-free installation
Made in USA with chlorazone red rubber parts	High-quality, durable materials ensure long-lasting performance

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How Knowing My Toto Toilet Model Number Helped Me

When I needed to replace a part in my Toto toilet, finding the model number made the process so much easier. Without it, I was unsure which parts would fit or if the replacements were compatible. Once I located the model number, I was able to quickly search for the exact parts online or provide the information to a plumber, saving me time and avoiding costly mistakes.

Also, knowing my Toto toilet’s model number helped when I wanted to look up specific features or troubleshooting tips. Each model has unique functions, and having that number allowed me to access the right manuals and customer support tailored to my toilet. This made repairs and maintenance less stressful and more efficient.

Overall, finding the model number on my Toto toilet gave me confidence and control over its upkeep. It’s a small detail that makes a big difference when dealing with repairs, replacements, or even upgrading to a new model. I highly recommend locating your toilet’s model number early—it’s a simple step that can save you a lot of hassle later on.

Buying Guide: Finding the Toto Toilet Model Number Location

Why Knowing the Model Number Matters

When I first needed to replace parts for my Toto toilet, I quickly learned how crucial the model number is. It helps me identify the exact specifications, ensuring compatibility with replacement parts and accessories. Without it, I risked ordering the wrong components, leading to frustration and wasted time.

Common Locations to Find the Model Number

From my experience, Toto toilets usually have the model number in one of several key spots:

• Inside the tank: I lifted the tank lid carefully and found the model number printed or stamped on the inner wall or near the overflow tube.
• Under the tank lid: Sometimes, the number is printed on the underside of the tank lid itself.
• Behind the toilet seat: Occasionally, it’s found on the back of the toilet bowl, just below the seat hinges.
• On the bowl or base: Some models have the number stamped or molded near the base or on the side of the bowl.

Tips for Locating the Model Number Easily

When I looked for the model number, I followed these steps to make the process smoother:

• Use a flashlight: The inside of the tank can be dark, so shining a light helped me spot the number clearly.
• Clean the area: Sometimes mineral deposits or dirt cover the markings, so wiping the surface gently made the number visible.
• Check multiple spots: If I didn’t find it in one place, I looked in other common locations mentioned above.
• Take a photo: Once located, snapping a picture helped me keep the information handy for future reference.

What to Do If You Can’t Find the Model Number

There were times I couldn’t find the model number despite searching thoroughly. In those cases, I:

• Consulted the user manual: If I still had it, the manual usually listed the model number or gave clues.
• Contacted customer support: Providing them with photos of the toilet helped them identify the model.
• Checked purchase records: Sometimes the model number was listed on the original sales receipt or invoice.

Final Thoughts

Knowing exactly where to find the Toto toilet model number saved me a lot of hassle when buying parts or scheduling repairs. It’s a small step that ensures I get the right items the first time, avoiding delays and extra costs. I recommend taking a few minutes to locate and note down the model number before you need it.

Author Profile

Tonquise Frederick

My name is Tonquise Frederick, though many know me simply as TQ. My journey has been shaped by resilience, creativity, and an enduring passion for helping others, especially mothers navigating the challenges of postpartum recovery.

Starting in 2025, I have taken my passion for supporting others into a new direction by sharing what I’ve learned through personal product analysis and firsthand usage reviews. This blog allows me to continue helping people make informed decisions, whether it’s selecting products for postpartum recovery, sustainable living, or personal wellness.

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