September 14, 2025

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10 Best toilet flush valves of 2025

Save up to 34% off

Best Choice

1

Lasnten

Lasnten 8 Pieces Toilet Fill Valve Toilet Tank Replacement Kit Valve Replacement Kit for Tank and Bowl Water Control
9.8

Exceptional

Our Rating
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Value for Money

2

Kohler
Kohler Genuine Part 1083980 3" Toilet Canister Flush Valve Kit, 5 x 5 x 10-7/8 inches
Main highlights

Key Features and Benefits
Kohler genuine part, canister flush valve kit, 3-inch canister with 3-inch outlet, compatible with Kohler Cimarron 1.6gpf tank model K 4634, plastic material, complete assembly.

Ideal Use Cases
Perfect for repairing Kohler Cimarron toilets, especially model K 4634, includes tank to bowl gasket, easy installation, requires 20-inch channel lock pliers, not universal fit.

Most Praised Feature
Easy to install, fits perfectly, quiet operation, long-lasting performance, exact replacement part, no need for a plumber, clear instructions, good price, fast delivery.
9.6

Exceptional

Our Rating

9.9
Instruction

9.3
Long life

9.1
worth the money
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.
9.5

Excellent

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.
9.3

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.
9.2

Excellent

Our Rating

9.9
Easy installation

9.5
Instruction

9.3
worth the money
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6

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

34% Off
Main highlights

Universal Compatibility
Fits most 2-piece & 1-piece toilets, replacing old valves.

Quick Installation
Ideal for quick toilet repairs, installs in under 5 minutes.

Longevity Praised
Customers appreciate its durability and long-lasting performance.
Key specs
- color:Black
- material:Plastic
- usage:Toilet repair
- installation:Easy to install
- valve:Universal fill valve
9.0

Excellent

Our Rating

9.7
Easy installation

9.5
worth the money

9.5
Instruction
7

Kohler

KOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts
8.9

Very Good

Our Rating

9.7
Easy installation

9.1
Instruction

9.1
worth the money
8

Fluidmaster
Fluidmaster 507AKP7 PerforMAX Universal High Performance 2-Inch Toilet Flush Valve Repair Kit with Gasket and Bolts

23% Off
Main highlights

Enhances Toilet Performance
Replaces old fill valves to repair leaks and optimize flushing.

Ideal for Older Toilets
Perfect for 3.5 gallons per flush two-piece toilets.

Praised for Easy Installation
Customers appreciate the simple installation process.
8.8

Very Good

Our Rating

9.3
Easy installation

9.1
worth the money

8.9
Instruction
9

Kohler
Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"
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
- color:Black
- material:Plastic
- usage:Toilet flush valve
- installation:Adjustable height
- valve:Manual
8.7

Very Good

Our Rating

9.5
Easy installation

9.3
worth the money

9.3
Noise level
10

Korky

Korky QuietFILL 2X Long Life Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528X
8.6

Very Good

Our Rating

10 Best toilet flush valves of 2025

1

Lasnten 8 Pieces Toilet Fill Valve Toilet Tank Replacement Kit Valve Replacement Kit for Tank and Bowl Water Control

How do we rank?

How do we rank?

Analyzing top stores

2

Kohler Genuine Part 1083980 3" Toilet Canister Flush Valve Kit, 5 x 5 x 10-7/8 inches

9.9

9.3

9.1

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

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

9.7

9.5

9.5

7

KOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts

9.7

9.1

9.1

8

Fluidmaster 507AKP7 PerforMAX Universal High Performance 2-Inch Toilet Flush Valve Repair Kit with Gasket and Bolts

9.3

9.1

8.9

9

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

10

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

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