---
product_id: 56622804
title: "TOTO® Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S"
brand: "toto"
price: "€ 51.71"
currency: EUR
in_stock: true
reviews_count: 13
category: "Toto"
url: https://www.desertcart.hr/products/56622804-toto-replacement-flapper-for-select-toto-3-inch-flush-valve
store_origin: HR
region: Croatia
---

# water-saving seal 3-inch universal fit easy 5-min install TOTO® Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S

**Brand:** toto
**Price:** € 51.71
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with TOTO’s flawless fit & finish!

## Quick Answers

- **What is this?** TOTO® Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S by toto
- **How much does it cost?** € 51.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/56622804-toto-replacement-flapper-for-select-toto-3-inch-flush-valve)

## Best For

- toto enthusiasts

## Why This Product

- Trusted toto brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Water Seal:** Rubber sealing surface ensures zero leaks and optimal water efficiency
- • **OEM Quality Assurance:** Genuine TOTO replacement part trusted by professionals and homeowners alike
- • **Durable Polypropylene Build:** Long-lasting plastic construction designed to withstand daily use
- • **Universal 3-Inch Compatibility:** Fits a wide range of TOTO flush valve tanks effortlessly
- • **Quick & Hassle-Free Installation:** Set up in under 5 minutes with clear, model-specific instructions

## Overview

The TOTO Replacement Flapper THU500S is a genuine, durable 3-inch flapper designed to fit multiple TOTO flush valve tanks. Featuring a rubber sealing surface for leak-free performance and easy installation in under 5 minutes, it restores your toilet’s efficiency and reliability with OEM precision. Ideal for millennial professionals who value seamless home maintenance and water conservation.

## Description

The TOTO Replacement Flapper is designed for use on a selection of TOTO 3 inch flush valve tanks. Adjustable for various tanks, replacing flapper part numbers THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, THU369S, and THU499S. Polypropylene body with rubber sealing surface. Flapper includes chain along with instructions for set-up specific to TOTO tank model.

Review: Easy to install and it operates perfectly - I followed the directions on the packet and this flapper fits and operates perfectly. I have a one-piece Toto elongated toilet and by following the setup instructions exactly (chain links and dial number) it works great. Probably took 5 minutes. I believe that for several years the OEM Toto flapper was not available so I bought non Toto part the last time I replaced the flapper. It was nice to discover that desertcart now carries the Toto brand part. While the product is great the delivery was not. desertcart has a problem with small packages such as this scheduled for delivery on a Sunday. With Prime they promised the Sunday delivery but the handoff to the USPS creates issues when USPS fails. USPS has a contract to make Sunday deliveries but twice in the last month the local USPS personnel were MIA and delivery failed. Lesson: depending you your local USPS, be aware when the desertcart item is scheduled for delivery. DO NOT order if the day falls on a Sunday. The item could end up in nowhere land for several days. Note: I paid full price for this item and received no compensation of any kind to write this review. I honor the review system and abhor any attempts to game the system.
Review: Works like a charm - I hate it when a toilet decides to stop doing it job. It's not like I keep spare parts in the house just in case. Perhaps I should but in all these years it has never occurred to me to do that. And they never seem to stop working at, say, 2 o'clock on a tuesday when any local hardware store would be open and welcoming to you with their sage toilet repair advice. No, it always seems to happen after five on a weekend day. Such was the case when our Toto toilet flapper thingy broke free from the chain connected to the flash handle lever thingy. With no stores but a faraway home imorovement superstore open, I turned as I often do, to my friend desertcart to see what flapper thingies I might find. And lookie what I found.... a kind of UNIVERSAL toto flapper thingy. I bought it and spent 2 days hand flushing the toilet until it arrived. It looked complicated and I began to break out into a cold sweat, cursing myself for buying this universal flapper when a specific flapper would be a more straightforward install. But I proceeded in spite of my mounting panic and I actually read the very few directions that came with it (there is also a video for those who might panic more than I did). Within five minutes I had a perfectly flushing toilet. This could not have been any easier and the very nice toto toilet people really covered everything thoroughly in very few words. I've been happily flushing away for the past week. I am now thinking that perhaps I SHOULD purchase another toto flapper thingy just to have a spare on hand. Surely if I purchase it now it will be less expensive than if I wait to purchase it when the current one fails in three or four years. It's something to consider BOTTOM LINE: Don't be afraid the way I was . This thing is a cinch to install and took only a few minutes. The directions look complicated but if you actually spend the 40 seconds it takes to read them you'll see how absolutely simple it is. HIGHLY RECOMMEND

## Features

- Plastic
- Imported
- Size: 3 Inch.Replacement flapper: Designed for use on a selection of TOTO 3 inch flush valve tanks
- Replaces the following TOTO flapper part numbers: THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, THU369S, and THU499S
- 3 inch sealing surface
- Water consumption: 0.0

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076KL3K87 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #13,740 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Toilet Flappers |
| Brand | TOTO |
| Color | Red (1 Pack) |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,266) |
| Date First Available | October 19, 2017 |
| Exterior Finish | Plastic |
| Finish | No Finish |
| Global Trade Identification Number | 00739268326958 |
| Included Components | flapper |
| Inlet Connection Size | 3 Inches |
| Inlet Connection Type | Rubber Flapper |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 3.2 ounces |
| Item dimensions L x W x H | 4.75 x 3.5 x 2.5 inches |
| Item model number | THU500S |
| Manufacturer | TOTO |
| Material | Plastic |
| Number Of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 3 Inches |
| Outlet Connection Type | Standard 3-inch Connection |
| Part Number | THU500S |
| Product Dimensions | 4.75 x 3.5 x 2.5 inches |
| Size | 3 Inch (Pack of 1) |
| UPC | 739268326958 |
| Usage | Inside |
| Warranty Description | Manufacturer One Year Limited |

## Product Details

- **Brand:** TOTO
- **Exterior Finish:** Plastic
- **Global Trade Identification Number:** 00739268326958
- **Inlet Connection Size:** 3 Inches
- **Inlet Connection Type:** Rubber Flapper
- **Item dimensions L x W x H:** 4.75 x 3.5 x 2.5 inches
- **Material:** Plastic
- **Number of Ports:** 1
- **Outlet Connection Size:** 3 Inches
- **Outlet Connection Type:** Standard 3-inch Connection

## Images

![TOTO® Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S - Image 1](https://m.media-amazon.com/images/I/719eMJsjEAL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will this work with a ST784S?**
A: The ST784S calls for part number THU331S flapper. This one should be a replacement for that, so it should work.

**Q: My old flapper does not clip on or off nor will it slide off the pins. The material is not pliable. How do i get it off?**
A: Hello, I'm sorry to hear you are having trouble removing your current flapper. I am not sure what type of flapper or toilet you currently have and do not want to suggest something that may not work or damage your current toilet. I would suggest reaching out to our TOTO Tech Support directly so they can troubleshoot the issue and walk through some options. They can be reached at techsupport@toto.com or call 1-888-295-8134 between 8am - 8pm Mon - Fri EST and press 4 when prompted. We also have live chat on the TOTO USA website. I hope this helps and thank you for choosing TOTO.

**Q: Does this fit the ST454E?**
A: Per Toto's parts schematic for their model CST454CEF and CST454CEFG, this is the exact replacement flapper. Toto places a parts list on the inside bottom surface of their tank lids. Check for this list, and even if the part number is different you can do an online search with that number and it will bring up the current replacement part number, as Toto has continued to update their products. My Toto's list provided a flapper number that had been updated when I needed to buy one, and the new flapper replaces a good number of their older flappers. It fit and works perfectly in my Toto. Verify that your toilet is a "CST454CEF or CST454CEFG" and then you can download the current parts schematic for it from the Toto web site. Install is fast and easy, and Amazon got the part out to me very quickly. Good luck!

**Q: Does this fit cst853? it looks so much difference than the original flapper.**
A: Hello, Yes. This is an updated version of the TOTO replacement flapper that can be adjusted to many models. There will be instructions on how to adjust it to your model. I hope this is helpful and thank you for your interest in TOTO!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install and it operates perfectly
*by M***C on May 20, 2024*

I followed the directions on the packet and this flapper fits and operates perfectly. I have a one-piece Toto elongated toilet and by following the setup instructions exactly (chain links and dial number) it works great. Probably took 5 minutes. I believe that for several years the OEM Toto flapper was not available so I bought non Toto part the last time I replaced the flapper. It was nice to discover that Amazon now carries the Toto brand part. While the product is great the delivery was not. Amazon has a problem with small packages such as this scheduled for delivery on a Sunday. With Prime they promised the Sunday delivery but the handoff to the USPS creates issues when USPS fails. USPS has a contract to make Sunday deliveries but twice in the last month the local USPS personnel were MIA and delivery failed. Lesson: depending you your local USPS, be aware when the Amazon item is scheduled for delivery. DO NOT order if the day falls on a Sunday. The item could end up in nowhere land for several days. Note: I paid full price for this item and received no compensation of any kind to write this review. I honor the review system and abhor any attempts to game the system.

### ⭐⭐⭐⭐⭐ Works like a charm
*by A***E on January 12, 2020*

I hate it when a toilet decides to stop doing it job. It's not like I keep spare parts in the house just in case. Perhaps I should but in all these years it has never occurred to me to do that. And they never seem to stop working at, say, 2 o'clock on a tuesday when any local hardware store would be open and welcoming to you with their sage toilet repair advice. No, it always seems to happen after five on a weekend day. Such was the case when our Toto toilet flapper thingy broke free from the chain connected to the flash handle lever thingy. With no stores but a faraway home imorovement superstore open, I turned as I often do, to my friend amazon to see what flapper thingies I might find. And lookie what I found.... a kind of UNIVERSAL toto flapper thingy. I bought it and spent 2 days hand flushing the toilet until it arrived. It looked complicated and I began to break out into a cold sweat, cursing myself for buying this universal flapper when a specific flapper would be a more straightforward install. But I proceeded in spite of my mounting panic and I actually read the very few directions that came with it (there is also a video for those who might panic more than I did). Within five minutes I had a perfectly flushing toilet. This could not have been any easier and the very nice toto toilet people really covered everything thoroughly in very few words. I've been happily flushing away for the past week. I am now thinking that perhaps I SHOULD purchase another toto flapper thingy just to have a spare on hand. Surely if I purchase it now it will be less expensive than if I wait to purchase it when the current one fails in three or four years. It's something to consider BOTTOM LINE: Don't be afraid the way I was . This thing is a cinch to install and took only a few minutes. The directions look complicated but if you actually spend the 40 seconds it takes to read them you'll see how absolutely simple it is. HIGHLY RECOMMEND

### ⭐⭐⭐⭐⭐ Perfect for TOTO toilets
*by A***R on December 22, 2025*

The fit, quality and seal was perfect.

## Frequently Bought Together

- TOTO THU500S Replacement Flapper for Select 3 Inch Flush Valve Tanks, Red (1 Pack)
- TOTO TSU99A.XR Fill Valve, Blue
- TOTO Toilet Handle Replacement Parts Kit, Universal TOTO THU068#CP Trip Lvr for St743S Side Mount Toilet Flush Tank Lever Handle for TOTO Kohler Toilet Tank, 1-Pack Copper Lever

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---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-17*