---
product_id: 5202502
title: "528T Replacement TOTO Toilet Fill Valve - Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black"
brand: "korky"
price: "¥9768"
currency: JPY
in_stock: true
reviews_count: 13
category: "Korky"
url: https://www.desertcart.jp/products/5202502-528t-replacement-toto-toilet-fill-valve-fits-g-max-power
store_origin: JP
region: Japan
---

# Ultra-quiet refill operation Universal fit 7.75"–13.5" adjustable Made in USA, premium durability 528T Replacement TOTO Toilet Fill Valve - Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black

**Brand:** korky
**Price:** ¥9768
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with silent precision and effortless install!

## Quick Answers

- **What is this?** 528T Replacement TOTO Toilet Fill Valve - Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black by korky
- **How much does it cost?** ¥9768 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/5202502-528t-replacement-toto-toilet-fill-valve-fits-g-max-power)

## Best For

- korky enthusiasts

## Why This Product

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

## Key Features

- • **Complete Premium Kit:** Includes refill tube, metal clip, mounting hardware, tamper-proof key, and clear instructions for a flawless setup.
- • **Tool-Free Installation:** Innovative twist-lock design lets you replace your old valve in minutes without any tools—DIY made sleek and simple.
- • **Effortless Universal Fit:** Adjusts seamlessly from 7-3/4" to 13-1/2" to fit most G-Max & Power Gravity toilets—no guesswork needed.
- • **Whisper-Quiet Performance:** Engineered to eliminate noisy refills and water hammer sounds, ensuring a peaceful bathroom experience.
- • **Trusted American Craftsmanship:** Proudly designed and manufactured in Wisconsin with long-lasting chlorazone red rubber for superior reliability.

## Overview

The Korky 528T Replacement Fill Valve is a high-quality, made-in-USA solution designed specifically for TOTO G-Max and Power Gravity toilets. It features a universal adjustable height from 7-3/4" to 13-1/2", ultra-quiet operation, and a tool-free twist-lock installation. The complete kit includes all necessary components for a quick, reliable replacement that fixes slow refills, running, and noisy toilets, delivering a seamless upgrade trusted by professionals and DIYers alike.

## Description

Product Description The Fits TOTO Fill Valve is designed to replace G-Max and Power Gravity Toilets. Designed to fix no/slow refilling, running, and noisy toilets, the fill valve is quieter than other fill valves. The Fits TOTO Fill Valve is very easy to install and adjust; no tools are required. Simply remove your old fill valve or ballcock, insert your new Korky fill valve, and adjust. The innovative twist-lock adjustment makes installation easy. Designed to fit more toilets, the fill valve adjusts from 7-3/4" to 13-1/2". Easy to install, the 528T includes: (1) 528GT Fill Valve, (1) Refill Tube, (1) Metal Refill Tube Clip, (1) Mounting Nut, (1) Cone Washer, (1) Coupling Nut, (1) Tamper Proof Key and (1) Instructions. From the Manufacturer The Fits TOTO Fill Valve is designed to replace G-Max and Power Gravity Toilets. Designed to fix no/slow refilling, running, and noisy toilets, the fill valve is quieter than other fill valves. The Fits TOTO Fill Valve is very easy to install and adjust; no tools are required. Simply remove your old fill valve or ballcock, insert your new Korky fill valve, and adjust. The innovative twist-lock adjustment makes installation easy. Designed to fit more toilets, the fill valve adjusts from 7-3/4" to 13-1/2". Easy to install, the 528T includes: (1) 528GT Fill Valve, (1) Refill Tube, (1) Metal Refill Tube Clip, (1) Mounting Nut, (1) Cone Washer, (1) Coupling Nut, (1) Tamper Proof Key and (1) Instructions.

Review: Korky fixes Toto(l) mistake - I have 2 Toto toilets which never seemed to work properly. Of course, I previously replaced the fill valve with a Toto made product compounding my Toto mistake. I finally decided to buy the Korky fill valve for half the price. Not only does the Korky work better, the one size fits all was fast and easy to install, simplifying the level of water ratio and the height of the valve.
Review: This is the superior fill valve for Toto G-Max - I like this fill valve very much. I have installed its "sister" valve, the regular (white color) 528, on several older-model toilets. (This blue-color 528T has a higher refill percentage than the regular white 528 and thus is proper for Toto G-Max toilets. If, instead of a G-Max, you have a Toto 1.28gpf Watersense-eligible toilet [also known as Toto E-Max or "Eco" or has "E" in its model number and a green-colored valve inside], then you should buy the (silver color) 528MP which lets you adjust the refill percentage to the exact amount your Eco Toto toilet requires, as confirmed by Toto customer service.) That said, this valve WILL work on an E-Max toilet in the sense that it will sufficiently-fill the bowl; however, you will no longer be using 1.28 gallons per flush because this will put too much water into the bowl on refill, and that water will simply drain away; so, you'd be wasting water. This valve shuts off with no water hammer or definitive noise. The water just stops flowing. I like that. I also like the relatively-quiet rush of water when it is filling. I also like the fact that when the internal diaphragm that controls the water flow wears out in about 5 years, you easily can purchase the replacement diaphragm cap for a couple of dollars locally or on desertcart, and just swap that out without having to buy a whole new valve. Toto buys original equipment made-in-the-USA fill valves from Korky (Lavelle Industries is the manufacturing company of Korky-brand products) and installs them in Toto toilets. Toto also buys different-looking fill valves from what I understand to be a foreign manufacturer. If you buy a G-Max toilet, the brand of fill valve Toto preinstalls in your tank will depend upon what country the tank is manufactured in. The Toto Drake tank, for example, is manufactured in the US, in Mexico and/or other locations. On one of my Drakes, Toto had installed the 528T (with a Toto OEM part number and a cap that says G-Max instead of Korky), which is made here in the US by Korky/Lavelle. On the other, they had the foreign valve, the one with the adjusting screw. That valve, when working properly, emits a squeak or chirp or sharp "Zhoompf" when the toilet is full. (I have a Toto Carlyle with the green E version of the foreign valve that does the same thing.) I personally find it annoying. Indeed, I found the noise so annoying that I bought this 528T from desertcart, ripped the foreign valve out, and installed and adjusted this one in less than 5 minutes. Now both of my Drakes fill and shut off quietly. The two most popular fill valves in the US are the Fluidmaster 400A (and versions thereof) and this Korky 528 (and versions therof), both sold as Original Equipment parts and replacement parts by different toilet manufacturers. So this is an excellent, widely-used valve. Toto does not use the Fluidmaster 400A as original equipment, although Fluidmaster now makes a version of the 400A that has an adjustable refill rate so that it can be installed in Toto toilets as a replacement (but only that version.) The 400A is an excellent valve that plumbers swear by, but is noisier than the 528 and more of a pain to adjust. The shutoff, however, is just a nudge louder than the 528, essentially a quiet hiss. The foreign valves that Toto is using are substantially-noisier on shutoff and really would be my last choice as a replacement part. In the end, I really think this 528T is the best valve for Toto GMax, and the 528MP is the best valve for Toto 1.28gpf toilets. One other note: a lot of folks seem to be confused by the anti-siphon action of the Korky valve. This is a feature that keeps it from sucking tank water back into your drinking water supply. For it to work properly, a small amount of water will flow from the valve housing near the top. The excellent instructions make clear that this is NORMAL, but I have seen so many people complain that the valve is "broken" or "leaking" because it does this. Fear not. If you see this when watching your great Toto toilet work, don't give it a second thought. One other thing: we all understand, don't we, that low-flow toilets are NOT supposed to drain all the water in the tank on each flush. Filling the tank to the Toto-specified level is important, because the weight of all that water that isn't going to flush pushes down on the little bit of water that will be flushing when the flapper opens for only a second. The weight of the tank water drives the flush water through the valve quickly, leading to that great, effective flush that we all love. A video of the proper operation of the tank components is available on you tube if you search for "Toto Drake CST744S GMax Tank View of Flush". The video features the OEM version of the 528T fill valve featured here, and the OEM Toto flapper, on a toilet that is about two months old.

## Features

- TOTO FILL FALVE: Designed to replace G-Max & Power Gravity Toilets. Designed to fix no/slow refilling, running, & noisy toilets, the fill valve is quieter than other fill valves. Adjustable sizing.
- EASY TO INSTALL: Simply remove your old fill valve or ballcock, insert your new Korky fill valve, & adjust. The innovative twist-lock adjustment makes installation easy. Adjusts from 7-3/4" to 13-1/2".
- INCLUDES: The universal fill valve set includes fill valve, refill tube, metal refill tube clip, mounting nut, cone washer, coupling nut, tamper proof key and instructions.
- WHY KORKY: Our high quality toilet products are universal & specific to both older & modern toilet models. Our repair parts are easy to install & made exclusively from long lasting chlorazone red rubber.
- REPLACEMENT TOILET PARTS: Try Korky Toilet Repair because we continue to commit to designing toilet repair parts that are unviersal to fit the majority of toilets. Designed & manufactured in Wisconsin.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FCINB6 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #15,637 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Toilet Flush Valves #1,587 in Kitchen & Bath Fixtures |
| Brand | Korky |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,760) |
| Date First Available | January 1, 2008 |
| EU Spare Part Availability Duration | 5 Years |
| Exterior Finish | Plastic |
| Global Trade Identification Number | 00049057102954 |
| Included Components | Includes: (1) 528GT Fill Valve, (1) Refill Tube, (1) Metal Refill Tube Clip, (1) Mounting Nut, (1) Cone Washer, (1) Coupling Nut, (1) Tamper Proof Key and (1) Instructions |
| Inlet Connection Type | FIll Valve |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.8 ounces |
| Item dimensions L x W x H | 10 x 4 x 2.38 inches |
| Item model number | 528T |
| Manufacturer | Jensen |
| Material | Metal |
| Number Of Pieces | 9 |
| Outlet Connection Type | Flange |
| Part Number | 528T |
| Product Dimensions | 10 x 4 x 2.38 inches |
| Size | Standard |
| Specification Met | Made in the USA |
| Style | Toilet Fill Valve |
| UPC | 783961129408 716080045953 049057102954 |

## Product Details

- **Brand:** Korky
- **EU Spare Part Availability Duration:** 5 Years
- **Exterior Finish:** Plastic
- **Global Trade Identification Number:** 00049057102954
- **Inlet Connection Type:** FIll Valve
- **Item dimensions L x W x H:** 10 x 4 x 2.38 inches
- **Manufacturer:** Jensen
- **Material:** Metal
- **Outlet Connection Type:** Flange
- **Specification Met:** Made in the USA

## Images

![528T Replacement TOTO Toilet Fill Valve - Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black - Image 1](https://m.media-amazon.com/images/I/61BIyCkzYDL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Korky fixes Toto(l) mistake
*by D***S on January 21, 2026*

I have 2 Toto toilets which never seemed to work properly. Of course, I previously replaced the fill valve with a Toto made product compounding my Toto mistake. I finally decided to buy the Korky fill valve for half the price. Not only does the Korky work better, the one size fits all was fast and easy to install, simplifying the level of water ratio and the height of the valve.

### ⭐⭐⭐⭐⭐ This is the superior fill valve for Toto G-Max
*by N***R on July 1, 2012*

I like this fill valve very much. I have installed its "sister" valve, the regular (white color) 528, on several older-model toilets. (This blue-color 528T has a higher refill percentage than the regular white 528 and thus is proper for Toto G-Max toilets. If, instead of a G-Max, you have a Toto 1.28gpf Watersense-eligible toilet [also known as Toto E-Max or "Eco" or has "E" in its model number and a green-colored valve inside], then you should buy the (silver color) 528MP which lets you adjust the refill percentage to the exact amount your Eco Toto toilet requires, as confirmed by Toto customer service.) That said, this valve WILL work on an E-Max toilet in the sense that it will sufficiently-fill the bowl; however, you will no longer be using 1.28 gallons per flush because this will put too much water into the bowl on refill, and that water will simply drain away; so, you'd be wasting water. This valve shuts off with no water hammer or definitive noise. The water just stops flowing. I like that. I also like the relatively-quiet rush of water when it is filling. I also like the fact that when the internal diaphragm that controls the water flow wears out in about 5 years, you easily can purchase the replacement diaphragm cap for a couple of dollars locally or on Amazon, and just swap that out without having to buy a whole new valve. Toto buys original equipment made-in-the-USA fill valves from Korky (Lavelle Industries is the manufacturing company of Korky-brand products) and installs them in Toto toilets. Toto also buys different-looking fill valves from what I understand to be a foreign manufacturer. If you buy a G-Max toilet, the brand of fill valve Toto preinstalls in your tank will depend upon what country the tank is manufactured in. The Toto Drake tank, for example, is manufactured in the US, in Mexico and/or other locations. On one of my Drakes, Toto had installed the 528T (with a Toto OEM part number and a cap that says G-Max instead of Korky), which is made here in the US by Korky/Lavelle. On the other, they had the foreign valve, the one with the adjusting screw. That valve, when working properly, emits a squeak or chirp or sharp "Zhoompf" when the toilet is full. (I have a Toto Carlyle with the green E version of the foreign valve that does the same thing.) I personally find it annoying. Indeed, I found the noise so annoying that I bought this 528T from Amazon, ripped the foreign valve out, and installed and adjusted this one in less than 5 minutes. Now both of my Drakes fill and shut off quietly. The two most popular fill valves in the US are the Fluidmaster 400A (and versions thereof) and this Korky 528 (and versions therof), both sold as Original Equipment parts and replacement parts by different toilet manufacturers. So this is an excellent, widely-used valve. Toto does not use the Fluidmaster 400A as original equipment, although Fluidmaster now makes a version of the 400A that has an adjustable refill rate so that it can be installed in Toto toilets as a replacement (but only that version.) The 400A is an excellent valve that plumbers swear by, but is noisier than the 528 and more of a pain to adjust. The shutoff, however, is just a nudge louder than the 528, essentially a quiet hiss. The foreign valves that Toto is using are substantially-noisier on shutoff and really would be my last choice as a replacement part. In the end, I really think this 528T is the best valve for Toto GMax, and the 528MP is the best valve for Toto 1.28gpf toilets. One other note: a lot of folks seem to be confused by the anti-siphon action of the Korky valve. This is a feature that keeps it from sucking tank water back into your drinking water supply. For it to work properly, a small amount of water will flow from the valve housing near the top. The excellent instructions make clear that this is NORMAL, but I have seen so many people complain that the valve is "broken" or "leaking" because it does this. Fear not. If you see this when watching your great Toto toilet work, don't give it a second thought. One other thing: we all understand, don't we, that low-flow toilets are NOT supposed to drain all the water in the tank on each flush. Filling the tank to the Toto-specified level is important, because the weight of all that water that isn't going to flush pushes down on the little bit of water that will be flushing when the flapper opens for only a second. The weight of the tank water drives the flush water through the valve quickly, leading to that great, effective flush that we all love. A video of the proper operation of the tank components is available on you tube if you search for "Toto Drake CST744S GMax Tank View of Flush". The video features the OEM version of the 528T fill valve featured here, and the OEM Toto flapper, on a toilet that is about two months old.

### ⭐⭐⭐⭐⭐ works perfectly.
*by A***G on January 1, 2026*

worked out just fine. No issues with easy instruction and installation. I have a toto toilet.

## Frequently Bought Together

- Korky 528T Replacement TOTO Toilet Fill Valve - Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black
- Korky, Pack of 1, Red 2021BP TOTO Toilet Repairs-Large 3-Inch Flapper-Easy to Install-Made in USA

---

## 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.jp/products/5202502-528t-replacement-toto-toilet-fill-valve-fits-g-max-power](https://www.desertcart.jp/products/5202502-528t-replacement-toto-toilet-fill-valve-fits-g-max-power)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-16*