Best Replacement Toilet Flush System

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At one point or another, you will have problems with your toilet flush and you might require the best replacement toilet flush system to salvage your toilet. from a quiet flush, efficient water use to effective flushing power, the best replacement toilet valve, without a doubt comes with dozens of benefits.

Often the flush valve is the one that takes the most hit in the toilet making it the first component to go. With that, you have more reason to shop for the best quality flush valve and one that can withstand daily wear and tear.

To save you time and effort, we have rounded the best replacement toilet flush systems that you can consider choosing when shopping for your toilet. moreover, we have included a buying guide to help you narrow down your choices as possible.

10 Best Replacement Toilet Flush Systems

Korky 4010PK Universal Complete Toilet RepairStandard Flush ValveChlorazone5 Years
Fluidmaster 400ARHRKP10 PerforMAX Standard Flush ValveHeavy-duty plastic7 Years
Kohler Genuine Part 1083980 3" Toilet Canister Flush Valve Kit3-Inch Canister Flush ValveBrass & Plastic1 Year Limited
Next by Danco HYR460 Hydroright HyrdroRightDual Flush ValvePlastic5 Years
American Standard 3280.040-0070A4-Inch Flush ValvePlastic1 Year Limited
Fluidmaster 540AKRP5 3-Inch Complete3-Inch Flush ValvePlastic5 Years
Next by Danco HYR451T HyrdroRight Universal WaterStandard Flush ValvePlastic1 Year
Fluidmaster 507AKP7 PerforMAX Universal High PerformanceStandard Flush ValvePlastic5 Years
Toilet Tank Flush Valve Repair Kit3-Inch Flush ValvePlastic1 Year Limited
Next by Danco HYR271T Hydroright Dual Flush ValveDual Flush ValvePlastic5 Years

Korky 4010PK Universal Complete Toilet Repair Kit – Top Pick

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The Korky 4010PK is a universal complete toilet repair kit that allows a full overhaul of your fault toilet flush system. It is designed to fix toilet problems like no or slow refilling, noisy and running toilets. Owing to its universal design, it fits all toilet brands with 2-inch flush valves and a wide range of adjustability.

This easy to install kit comes with a flush valve, fill valve, refill tube, metal refill tube, bowl gasket, hardware and easy to follow installation instructions. No tool is required for installation. It is designed with patented technology that reduces the number of moving parts for higher durability. The kit comes is backed by a 5-year warranty.

Key Features

  • Universal design with a range of adjustability
  •  Chlorazone material construction
  • Flush valve
  • Bowlgasket
  • Metal refill tube
  • Flapper
  • Fill valve


  • Chlorazone material ensures the durability of the parts
  • Comes with a complete set of parts
  • Easy to install


  • Incompatible with some water supply lines, so lookout

Fluidmaster 400ARHRKP10 PerforMax – Runners Up

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The Fluidmaster 400ARHRKP10 PerforMax is an all-in-one toilet repair kit designed for the complete replacement of inefficient flush and refill valves, leaky flappers and broken toilet flush levers. The kit completely revamps your toilet to run like it was new.

The PerforMax 507AK high-performance 2-inch flapper is adjustable for water-saving thereby maximizing water usage in every flush. With the solid frame of the flapper, twisting and ghost flushing are eliminated.

The universal design of the various parts that come with this flush valve allows you to adjust them to various types of water tanks equipped with 2-inch flush valves. Besides, the entire system comes fully pre-assembled for easy installation.

With the 5-year replacement warranty, long-lasting construction, easy installation process and quiet performance, you are guaranteed the best replacement toilet flush system for your toilet.

Key Features

  • Heavy-duty construction
  • All-in-one toilet repair kit
  • High efficiency 1.28 to 1.6 gallons per flush
  • Basic design, easy installation
  • Rubber gaskets


  • Heavy-duty plastic construction guarantees durability
  • Runs quietly
  • Best for 2-inch flush valve toilet tanks
  • Full kit ideal for full system replacement


  • Quite expensive

Kohler Genuine 1083980 3ʺ Canister Flush Valve – Best 3-Inch Flush Valve

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The Kohler Genuine 1083980 canister flush valve is designed by Kohler to maintain originality, performance and guarantee product longevity. These are the main benefits of replacing your old or faulty flush valve with the OEM Kohler part.

The product is a 3ʺ canister flush valve kit designed, especially for Kohler Cimarron toilets. The flush valve system features a 3-inch canister with a 3-inch outlet. This flush valve kit is compatible with Kohler Cimarron tank model number K 4634.

The flush valves system is made of brass and high-density plastic material that ensures durability while delivering excellent flushing performance. With the 3-inch canister size, you can be sure of a powerful flush each time you turn down the flushing lever. Since it comes pre-installed, you have a seamless installation process.

Key Features

  • Brass and Plastic construction material
  • Kohler genuine part
  • Canister flush valve kit
  • 3-Inch Canister with a 3-Inch outlet


  • Comes pre-assembled for a hassle-free installation process
  • Brass and high-density plastic materials for durability
  • All Kohler genuine parts guarantee the best performance and durability


  • 5-Inch bolts included might not fit your toilet tank

Danco HYDR460 Dual Flush Valve Repair Kit – Best Dual Flush Valve

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The Danco HYDR460 is a total repair kit that is designed to enhance your toilets’ performance and efficiency with the included dual flush converter. You will save water by reducing the amount of water used with every flush. Moreover, with the HydroRight you will be able to solve the most common leaking issues in toilets occasioned by a non-functioning flapper.

It comes with an adjustable height whereby it allows adjustment to 14ʺ from 9ʺ. The dual flush converter is designed to sit vertically and solidly onto the flush valve opening to create an excellent seal and eliminate the possibility of leaks.

The flush valve kit is designed for a drop-in installation without the need for tools. You only need 5 to 10 minutes to remove your old flush valve and replace it by dropping this into place.

Key Features

  • Float Lock
  • Adjustable height
  • Patented mini-valve
  • Dual flush
  • Drop-in installation


  • Compatible with standard 2-in flush valves
  • Eliminates toilet leaks and noisy refills
  • Hassle-free installation
  • 2 button flush for low-flush and the other for high-flush


  • Prone to ghost flushing when the blue coating on the valve adapter develops bumpy air pockets

American Standard 3280.040-0070A – Best Replacement for One-piece toilets

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The American Standard flush valve is designed to be durable and highly reliable for busy toilet operations. The quality engineering and construction with high-quality material plastic and rubber ensure that the flush valve lasts longer.

The flush valve is designed to be compatible with champion 4 right height elongated one-piece 1.6 gallons per flush toilet model. The product package includes the bolts and pre-assembled flush valve to allow you to install it in your toilet without a hassle.

If you own one piece toilets from American Standard, especially the champion 4 toilet or American Standard Veneto and need a replacement valve, then this 4-inch flush valve can come to your aid. Moreover, it will guarantee you high flush power, performance, reliability and water savings.

Key Features

  • 4-Inch flush valve
  • Pre-assembled
  • Bolts
  • Durable plastic design


  • Effective performance of the 4-inch flush replacement kit
  • Compatible for AS one-piece toilet tanks
  • Durable with heavy-duty plastic construction


  • Not universal

Fluidmaster 540AKRP5 Toilet Flush Valve Repair Kit – Best Medium Price

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If you own a 3-inch valve toilet, then this flush repair kit is designed especially for you. The Fluidmaster 3-Inch is a complete adjustable toilet flush valve repair kit that comes with everything required for a successful repair of your faulty flush valve.

The kit is a less common size among universal toilets and comes with an adjustable flapper to help you cut down on water wastage thereby saving you money. Besides, the kit also includes bolts, nuts and gaskets that are designed especially for two-piece toilet tanks.

The overflow tube is included and is adjustable from 5 ½ inches to 8 inches thus eliminating the need to use tools to cut it down to size for installation. Better yet, the tube can be adjusted with ease to OEM specifications.

Key Features

  • 3-Inch toilet tank flush valve
  • Flapper repair kit
  • Adjustable overflow tube
  • Adjustable flapper
  • 5 –Year Warranty


  • Comes pre-assembled for the easy installation process
  • High-quality construction with plastic material ensures durability and reliability
  • Available at an affordable price tag


  • Screws might leak

Danco HYR451T HyrdoRight Universal Toilet Repair Kit – Best Water-Saving Dual Flush

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Danco HYR451T is a dual flush water-saving repair kit that allows you to determine the amount of water used in each flush. Its design will enable you to choose the type of flush you will have, for instance, a lower water flush for liquid waste and a high water flush for solid waste.

The repair kit is designed to be compatible with standard 2-in flush valves and needs a minimum clearance of 10 inches from the highest point of the flush valve opening to the side of the tank lid. The downside of flush valve is that it is not compatible with Mansfield toilets and is a bit expensive than its competitors.

With the drop-in installation design, you will not need any tools to install it. However, you will need about 5 to 10 minutes to have your toilet back to running as tank removal is not required.

Key Features

  • Dual flush valve
  • Dual flush light-touch lever
  • Compatible with standard 2-in flush valves
  • Drop-in installation


  • Hassle-free installation with drop-in installation design
  • Detects leaks and alerts whenever a leak is found thus cut water wastage
  • Dual flush with light-touch lever with options for lower flush for liquid waste and higher flush for solid flush


  • A bit expensive than its competitors

Fluidmaster 507AKP7 Toilet Flush Valve Repair Kit – Best Bang on Budget

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The Fluidmaster 507AKP7 is a 2-inch toilet flush valve repair kit that comes with both bolts and gasket for seamless replacement of your old and faulty flush valve. It is designed to prevent leaks in your toilet tank while optimizing flush performance.

The kit comes with a Fluidmaster 502 solid frame adjustable flapper that allows you to customize your flush to make your toilet flush as if it is new. The kit also includes a tank to bowl bolts and gasket for a successful replacement of your old toilet flush valve.

The ease of installation process, corrosion-resistant construction material, universal design, the 5-year warranty, and its affordable price makes this flush valve one of the best replacement toilet flush system for two-piece toilet tanks.

Key Features

  • 2-Inch flush valve design for two-piece toilet tanks
  • Adjustable flapper
  • Bolts and gasket
  • Fluidmaster 502 solid frame
  • 5-Year Warranty


  • Easy to install with all the parts included
  • Completely fixes water leaks
  • Adjustable flapper allows customization of your toilet flushes


  • Not long-lasting

Gurrezin Toilet Flush Valve Repair Kit – Best for American Standard 3-Inch Two-Piece Toilet

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The Gurrezin toilet flush valve repair kit is designed to fit with most 3-inch flush valve two-piece toilets including American Standard, Crane, Aquasource, Ferguson, Jacuzzi, Pegasus, Mansfield Eljer, TOTO and more.

The kit package includes a toilet tank flush valve, toilet tank bolts and a 3 3-inch tank-to-bowl gasket. With all these, you can be sure to have a seamless installation process. With the flush valve installed, you can save water and prevent leaks at the drain as the kit also includes a tank to bowl bolts and gasket for a complete repair.

The adjustable overflow tube does not require cutting to meet the OEM specifications. As such, your installation process becomes easier and tool-free.

Key Features

  • Toilet flush valves
  • Toilet tank bolts
  • 3-Inch tank-to-bowl gasket
  • Adjustable overflow tube


  • Quick and easy to install
  • The adjustable overflow tube eliminates the need for cutting and be compatible with EOM specifications
  • Plastic and rubber material construction for durability


  • Not a universal flush valve

Danco HYR271T HydroRight Replacement Toilet Flush Valve – Best Built to Last

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The HYR271T HydroRight replacement toilet flush valve is designed to convert standard toilets into dual-flush water-saving toilets for less water use. The kit comes with lever style split handle flush activator that allows you the option to use a quick-flush setting for less water volume for liquids and a full-flush setting for full flush water volume for solid waste.

The kit is compatible with standard 2-piece toilets with a 2-inch, flush valve. However, it requires a 10-inch minimum clearance from the highest point of the flush valve opening to the inside of the tank lid. Not that this flush valve will not fit Mansfield toilets and therefore not compatible.

The simple drop-in installation allows for an easy no-tool installation process. Moreover, it is built to last with durable plastic and Perma fit silicone seals that are chemical resistant and warp-free.

Key Features

  • Dual flush valve system
  • Drop-in Installation
  • Lever style split handle
  • 1.6 to 3.5 gallons per flush


  • Quick flush setting for less water for liquids and full-flush setting for normal solid waste
  • Durable plastic construction for reliability
  • Drop-in design for a quick easy installation process


  • Not compatible with Mansfield toilet tanks

Types of Flush Valves

Toilet flush valves come in 5 different designs that include standard, 3-Inch, 4-Inch, tower-style (canister-style), and dual flush valves. Let’s take a deeper dig into each type, can we?

Standard Valve

Fluidmaster 507A 2-Inch Universal Toilet Flush Valve

The standard flush valve comes at 2-inches in size and is designed to work with low-flow toilets and most older toilet models. They are mostly preferred for residential home toilets. They are the least expensive and most frequently bought toilet valve.

The standard type of flush valve consists of a hinged flapper that attaches right to the base of the overflow tube and the chain to the top of the overflow tube. The flapper sits in the flapper valve seat at the bottom of the toilet tank to prevent overflow through to the toilet bowl.

The flush valve seat has a large plastic bolt that goes through the tank bottom hole to tighten the flush system to the tank. The large plastic bolt must be secured from the underneath of the toilet tank.

3-Inch Flush Valve

American Standard 3-Inch Flush Valve

The 3-Inch Flush Valve features the same design as the standard flush valve. However, it is made for a toilet with a 3-inch opening in the base of the toilet tank. With the larger opening, more water flows into the tank at a faster rate to give the toilet a more effective flush.

4-Inch Flush Valve

American Standard 4-Inch Flush Valve Assembly for Champion One Piece Toilets - Champion Flush Valve -

The 4-Inch Flush Valve is designed for toilets that have a tank-to-bowl opening of about 4-inches. A bump of this size provides a more powerful flush as the flow of water into the bowl is increased significantly.

Apart from the difference in size, this flush valve works in the same way the standard and the 3-inch flush valves work.

Tower (Canister) Flush Valve

KOHLER Canister-Style Flush Valve

The tower-style or canister-style flush system features several sizes depending on the type of toilet. It comes with a vertical flapper that sits right underneath the overflow tube. As such, it delivers a 360-degree flow through the base of the toilet tank into the bowl thus increasing the effectiveness of the flush without necessarily increasing the size of the toilet flush valve.

Dual Flush Valve

SHANOER Toilet Push Button Valve Replacement Dual Flush

The dual flush valves sit right on top of the tank-to-bowl hole just like the tower or canister style flush valve. However, these valves offer both high-flow and low-flow options, thus enabling the user to cut down overall water consumption by choosing the low-flow flush for liquid waste and the high-flow flush for solid waste.

The dual flush valve system may feature a flush button system, one button for low-flow and the other button for high-flow. Alternatively, it may come with a flush lever system which can be pressed down for a high-flow or lifted for a low-flow flush. For a high-flow flush, the flapper is removed fully from the tank-to-bowl hole for a stronger flush that flushes down all the solid waste.

Factors to Consider when Looking for the Best Replacement Toilet Flush System – Buying Guide

As a homeowner, you have to deal with three main problems with your toilet; noisy filling, leaky valves and weak flush. Each of these problems leads to even more problems with the toilet. Fortunately, upgrades and replacements flooded in the market can provide a simple and durable solution. But how can you choose the best one. Here are some of the important factors to consider:


A flush valve cannot fit in all toilets. Most modern flush valves are not compatible with old toilet models and thus it is necessary to know which flush valve fits perfect with your toilet model. Before you go shopping for a replacement toilet flush system, make sure to check the dimensions and height of your older toilet flush valve. Getting a model with adjustable height will be a great advantage.


The material construction of the flush valve you choose will determine its durability. Flush valve systems made from superior ABS and rubber materials tend to be highly resistant to corrosion and will thus last longer.

Leak-Proof Seal

Choosing an inferior seal that leaks will make a weak flushing pressure. Therefore, you must choose a flapper or valve with a leak-proof seal. Besides, a tight-sealing valve will reduce water wastage in your bathroom.

Noise Level

Ideally, go for a quiet toilet flush system. Most modern flush systems are designed to operate silently. After all, you do not want everybody to know that somebody is using the bathroom, do you?

Refill Rate

Getting a flush valve system with a higher refill rate means that you will wait less time to make a second flush. Also, take into account other features like leak detection function, water-reducing features or adjustable water volume.

Ease of Installation

Replacing a toilet flush valve can be difficult for those without experience working with the toilet or who have any skill in plumbing. However, it shouldn’t be that difficult to replace your toilet valve system. The replacement involves shutting off the water to the toilet, draining and drying the tank, and disconnecting the water supply.

To remove the flush valve, take off the flapper, remove the 2 or 3 tank-to-base bolts, and lift the tank. Remove the rubber gasket and loosen the flush valve nut. The entire replacement process can be made easy by buying a flush valve that matches your current setup so that you don’t have to be worried about overflow tube height adjustments or incorrect seals at the base of the toilet tank.

Moreover, get a flush valve system that comes with all the parts required for the replacement as well as clear instructions to guide you in the installation process.


Before you buy your replacement toilet flush system, check and ensure that it comes with all the required parts for a successful replacement process. That way, you will ensure a smooth installation process that you don’t have to stop halfway to get a part that may be missing.

Final Thought

A noisy and leaky flush valve is annoying and excessively wastes your water in the bathroom thereby pay more on water bills. Replacing your toilet flush valve with the best replacement toilet flush system will help fix your toilets leakage and running problems and restoring it to running as if it were new. Moreover, it will help you use less water and overall attain peace of mind.

If you are shopping for the best replacement toilet flush system for your toilet, we hope our review has given you valuable insight into what kind of flush valves you can consider choosing and how to make the right choice. With all the information we have provided, we believe you now have the confidence of making an informed buying decision.

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