---
product_id: 297598965
title: "Toto TSU99A.X Adjustable Replacement Fill Valve Assembly for Toilet Tanks"
brand: "toto"
price: "€ 142.15"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/297598965-toto-tsu99a-x-adjustable-replacement-fill-valve-assembly-for-toilet
store_origin: SK
region: Slovakia
---

# Standard 7/8 inch threaded inlet connection Adjustable height fits all TOTO tanks DIY-friendly easy installation kit Toto TSU99A.X Adjustable Replacement Fill Valve Assembly for Toilet Tanks

**Brand:** toto
**Price:** € 142.15
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with precision and ease!

## Quick Answers

- **What is this?** Toto TSU99A.X Adjustable Replacement Fill Valve Assembly for Toilet Tanks by toto
- **How much does it cost?** € 142.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/297598965-toto-tsu99a-x-adjustable-replacement-fill-valve-assembly-for-toilet)

## 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

- • **Upgrade Your Throne:** Restore your toilet’s optimal performance with a quick, hassle-free DIY replacement.
- • **Premium Build Quality:** Crafted from durable stainless steel and brass for long-lasting, corrosion-resistant performance.
- • **Custom Fit, Every Time:** Adjustable height ensures perfect compatibility with all TOTO toilet tanks—no guesswork needed.
- • **Complete Installation Kit:** Includes valve, refill tube, clamp, cone washer, and nut—everything you need in one box.
- • **Seamless Water Flow Control:** Globe valve design meets ANSI B16.11 standards for reliable, leak-free operation.

## Overview

The Toto TSU99A.X Adjustable Replacement Fill Valve Assembly is a high-quality, easy-to-install component designed to restore and optimize the performance of all TOTO toilet tanks. Featuring adjustable height, durable stainless steel and brass construction, and a complete installation kit, it ensures a perfect fit and reliable water flow control with a standard 7/8 inch threaded inlet connection.

## Description

TSU99A.X Adjustable Replacement Fill Valve Assembly for Toilet Tanks

## Features

- Adjustable height for all TOTO toilet tanks
- Resets your tank back to optimal performance
- Includes valve, refill tube and clamp, cone washer and nut
- Standard 7/8 inch inlet connection
- Easy, DIY installation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Stainless Steel, Brass |
| Brand | Toto |
| Item dimensions L x W x H | 26 x 10.2 x 5.7 Centimeters |
| Inlet Connection Size | 0.87 Inches |
| Inlet Connection Type | Threaded |
| Outlet Connection Type | G Connector |
| Number of Ports | 1 |
| Outlet Connection Size | 0.75 Inches |
| Specification Met | ANSI B16.11 |
| Valve Type | Globe Valve |
| Global Trade Identification Number | 00739268224278 |
| Manufacturer | TOTO |
| UPC | 739268224278 |
| Department | Home & Garden |
| Country of Origin | USA |
| Item model number | TSU99A.X |
| Product Dimensions | 26.04 x 10.16 x 5.72 cm; 150.25 g |
| ASIN | B0097CVGWI |

## Product Details

- **Material:** Stainless Steel, Brass
- **Brand:** Toto
- **Item dimensions L x W x H:** 26 x 10.2 x 5.7 Centimeters
- **Inlet Connection Size:** 0.87 Inches
- **Inlet Connection Type:** Threaded
- **Outlet Connection Type:** G Connector
- **Number of Ports:** 1
- **Outlet Connection Size:** 0.75 Inches
- **Specification Met:** ANSI B16.11
- **Valve Type:** Globe Valve

## Images

![Toto TSU99A.X Adjustable Replacement Fill Valve Assembly for Toilet Tanks - Image 1](https://m.media-amazon.com/images/I/51mk1pa6axL.jpg)

## Questions & Answers

**Q: does this fit the st743s toilet?**
A: Original part number should be TSU08A.6 http://foundmypart.com/index.php?categoryID=568&category_slug=toto-st743sSearch in totostore.us.com, TSU08A.6 replaced by TSU16A.  TSU16A discontinuous and replaced by TSU99A.XTSU99A.X show Fits tank models: ST743S(R)(B) in the product description on Amazon also.http://www.amazon.com/TOTO-TSU99A-X-Universal-Fill-Valve/dp/B0097CVGWII will say it's a safe bet.  Just note that you MUST adjust the value based on the instruction.  I saw many review seems the users just hope for plug and play.This is UNIVERSAL fit means it will need adjustment to fit different models.Good Luck!

**Q: We have a one piece Toto toilet. The Amazon description has this fitting a two piece. Has anyone used this part in a one piece?**
A: In the specifications for this valve, it is stated that the valve replaces s TSU18A Toto fill valve.  A TSU18A is designed for a TOTO one piece toilet, either a GMAX or a Power Gravity.  I used this valve for a 743S Toto toilet without a problem and it was an one piece toilet.

**Q: This looks like a repackaged Korky 528T or 528MP.  Any reason to spend $15 more for this one instead of the Korky?  Just askin.**
A: I think the Korky PRO version (528PRO) beats them both. It seems to be better built than the 528MP or the original equipment Toto branded version made by Korky. Plus, it includes a gauge and chart for setting the water level in the bowl; which are not included with the 528MP. The PRO costs more than the MP, but less than the Korky T or GT models, and much less than the Toto branded model.

**Q: is this the same as the THU9021?**
A: No. THU9021 is a junction valve. This is a fill valve (universal) for inside of the tank. The TSU99A.X was a perfect replacement for the OEM TSU18A fill valve that started leaking after 26 months.

## Frequently Bought Together

- Toto TSU99A.X Adjustable Replacement Fill Valve Assembly for Toilet Tanks
- Teaayako Toilet Flush Valves 2-Inch Dual Flush Valve Replacement kit for 2-Piece toilet tank Compatible with TOTO THU435 THU224 flush valve

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sk/products/297598965-toto-tsu99a-x-adjustable-replacement-fill-valve-assembly-for-toilet](https://www.desertcart.sk/products/297598965-toto-tsu99a-x-adjustable-replacement-fill-valve-assembly-for-toilet)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-22*