February 21, 2026

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10 Best toilet flush valves of 2026

Save up to 38% off

1

Fluidmaster

Fluidmaster 400H-5003 Performax Universal Toilet Fill Valve with Tank and Bowl Water Control 2-Pack, Blue

30% Off
9.8

Exceptional

Our Rating
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Based on millions of stores and reviews

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2

Fluidmaster

Fluidmaster K-400A-5004 Universal Toilet Fill Valve and 2 in. Toilet Flapper Repair Kit

11% Off
9.7

Exceptional

Our Rating

9.7
Easy installation

9.3
Instruction

8.4
Long life
3

Fluidmaster
Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor
Main highlights

Powerful and Quiet Performance
Fix noisy, or slow filling fill valves with the quietest, most powerful toilet fill valve available.

Ideal for Home Improvement
Universal fit for most toilet models and brands, perfect for DIY installations.

Ease of Installation
Customers praise the easy installation with step-by-step instructions included.
9.6

Exceptional

Our Rating

9.7
Easy installation

9.5
Instruction

9.3
worth the money
4

Korky
Korky QuietFILL Platinum Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528MP
Main highlights

Universal Fit and Easy Installation
Fits 99% of toilets and installs in under 10 minutes.

Ideal for Toilet Upgrades
Perfect for replacing old or noisy valves in 1-piece and 2-piece toilets.

Enhanced Quiet Performance
Reduces toilet noise, praised for quieter operation than previous valves.
9.4

Excellent

Our Rating

9.7
Easy installation

9.1
Instruction

8.9
worth the money
5

Fluidmaster
Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit
Main highlights

High Performance and Easy Installation
The PerforMAX fill valve and flapper kit offers high performance and is easy to install, making your toilet run like new.

Perfect for Home DIY Projects
Ideal for both amateurs and professionals, it's a great choice for DIY toilet repairs and upgrades.

Reliable and Adjustable Water Control
Customers praise its reliability and easy water level adjustment, enhancing toilet efficiency.
9.3

Excellent

Our Rating

9.9
Easy installation

9.5
Instruction

9.3
worth the money
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6

Kohler
Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"

17% Off
Main highlights

Quiet Filling Technology
The Kohler Silent Fill Valve Kit ensures a quiet and efficient refill of your toilet tank, enhancing bathroom serenity.

Versatile Installation
Ideal for all Kohler Class Five toilets, this valve kit is adjustable to fit various tank heights.

Ease of Installation
Customers appreciate the straightforward installation process, making it easy for non-professionals to replace their toilet valve.
Key specs
- material:Plastic
- usage:Toilet flush valve
- valve:Manual
- dimensions:11.75 x 3.75 x 3 inches
- color:Black
9.2

Excellent

Our Rating

9.5
Easy installation

9.3
worth the money

9.3
Noise level
7

Kohler
KOHLER GENUINE PART 1188998 2" Toilet Canister Flush Valve Kit

38% Off
Main highlights

Key Features
Harnesses gravity for flush efficiency, compatible with specific KOHLER Cimarron models, includes complete assembly with gasket.

Ideal Use Cases
Perfect for upgrading KOHLER Cimarron toilets K-4418 and K-4369, ensuring optimal flush performance and water conservation.

Customer Praise
Most reviews highlight its perfect fit and ease of installation, significantly improving flush power and efficiency.
Key specs
- material:Metal
- usage:Flush performance
- valve:Toilet Flush Valve
- dimensions:3.25 x 3.25 x 10.87 inches
- color:N/A
9.1

Excellent

Our Rating

9.9
Long life

9.7
worth the money

9.7
Easy installation
8

Korky

Korky QuietFILL 2X Long Life Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528X
9.0

Excellent

Our Rating
9

Fluidmaster
Fluidmaster 400AKR Universal All in One Toilet Repair Kit for 2-Inch Flush Valves, Easy Install
Main highlights

Restores Toilet Performance
All-in-one repair kit replaces fill and flush valves.

Ideal for Universal Toilets
Fits most 2-inch flush valve toilets, 1.6 to 3.5 GPF.

Praised for Easy Installation
Simple installation process often takes 10 minutes or less.
8.9

Very Good

Our Rating

9.3
Simple to use

9.1
Easy installation

8.9
Instruction
10

Fluidmaster
Fluidmaster K-400H-021-P8 PerforMAX 2-Inch Everything Toilet Repair Kit, Multicolor
Main highlights

Complete Repair Kit
Includes all necessary parts and tools for toilet repair.

Ideal for DIY Enthusiasts
Perfect for amateur and professional use for toilet fixes.

Highly Praised for Easy Installation
Customers love the straightforward installation process.
Key specs
- size:No Size
- color:Multicolor
- material:Plastic
- installation:Toilet
- warranty:7 Year Limited
8.6

Very Good

Our Rating

9.9
Tech Support

9.3
Instruction

9.3
Easy installation

10 Best toilet flush valves of 2026

1

Fluidmaster 400H-5003 Performax Universal Toilet Fill Valve with Tank and Bowl Water Control 2-Pack, Blue

How do we rank?

How do we rank?

Analyzing top stores

2

Fluidmaster K-400A-5004 Universal Toilet Fill Valve and 2 in. Toilet Flapper Repair Kit

9.7

9.3

8.4

3

Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor

9.7

9.5

9.3

4

Korky QuietFILL Platinum Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528MP

9.7

9.1

8.9

5

Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit

9.9

9.5

9.3

6

Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"

9.5

9.3

9.3

7

KOHLER GENUINE PART 1188998 2" Toilet Canister Flush Valve Kit

9.9

9.7

9.7

8

Korky QuietFILL 2X Long Life Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528X

9

Fluidmaster 400AKR Universal All in One Toilet Repair Kit for 2-Inch Flush Valves, Easy Install

9.3

9.1

8.9

10

Fluidmaster K-400H-021-P8 PerforMAX 2-Inch Everything Toilet Repair Kit, Multicolor

9.9

9.3

9.3

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