10 Best Toilet Fill Valve Replacement of 2026

Tested and Reviewed: Top 10 Toilet Fill Valve Replacement deals with expert ratings from 8.1 to a perfect 10

June 2026 Edition

Editor's Choice

9.7

Fluidmaster

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

Editor's bottom line:

“This toilet fill valve replacement is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Fix noisy, or slow filling fill valves with the quietest, most powerful toilet fill valve available
Easy to install, step-by-step instructions included
Universal fit for most toilet models and brands
Tank and Bowl water level adjustment dials to customize the perfect flush and save. EZ-Twist height adjusts from 9 in. to 14 in. to fit more tanks

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Picked by 397 people today

9.5

Korky

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

Main Highlights

Designed for newer, HET toilets, maximize your toilet's performance by delivering just the right amount of water to the bowl
Toilet Fill Valve fits 99% of toilets. Fixes: running, noisy, no/slow refill and no/weak flush toilets

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9.5

Fluidmaster

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

Main Highlights

Made in Mexico

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9.2

Fluidmaster

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

Main Highlights

Fix noisy, or slow filling fill valves with the quietest, most powerful toilet fill valve 2-pack available
Easy to install, step-by-step instructions included
Universal fit for most toilet models and brands
Tank and Bowl water level adjustment dials to customize the perfect flush and save
2X greater bowl refill for a more powerful flush than standard designs; EZ-Twist height adjusts from 9 in. to 14 in. to fit more tanks; 7 year warranty

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9.0

Korky

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

Main Highlights

UNIVERSAL FILL VALVE: This toilet fill valve replaces ballcocks & worn down valves for different types of 2-piece & 1-piece toilets. It's easy to install & keeps your toilet running smoothly.
EASY TO INSTALL: Quiet replacement fill valve has a twist-lock adjustment that makes installation the easiest when you're doing toilet repairs. Adjustable from 7.75'' to 13.5.''
INCLUDES: Installs in less than 5 minutes. Includes fill valve, refill tube, metal refill tube clip, mounting nut, cone washer, refill adjuster, coupling nut, tamper proof key & 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.

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8.8

Save 17%

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

Protect the warranty on KOHLER products, always look for the KOHLER GENUINE PARTS logo
Adjustable fill valve. Valve Type: Manual
Look at shank color to determine correct part; if black, use this part and if grey, use GP1138930
Cap color may vary

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Best Value

8.6

Save 24%

Fluidmaster

Fluidmaster 400A-019 Brass Shank Toilet Fill Valve

24% Off

Main Highlights

Fluidmaster's proven fill valve design now more durable with a heavy-duty brass shank
Easy to install, pre-installed shank washer to save time
Easy turn tank water level adjustment dial for water savings
EZ-twist height adjustment from 9 to 14 to fit more tanks
Quiet, powerful operation; Quickly replaces old fill valves and ballcocks; 7 year warranty

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8.3

Saillong

Saillong 6 Set Universal Toilet Tank Replacement Kit, Include Fill Valve, 2 Inch Low Flow Rubber Flapper, Front Mount Toilet Flush Brass Handle, Adjustable, Quiet, Easy Install Repair Kit

Main Highlights

High Efficiency and Low Flow: This toilet valve replacement kit is equipped with a fine water level adjustment screw to easily control the water level in the water tank, making low flow a daily routine; Its height is flexible and easily increases from 8 inches to 13 inches, perfectly matching your toilet tank needs; Moreover, this toilet fill valve can also remain silent during the filling process, making your life more comfortable and quiet
Durable and Leak Proof Toilet Flapper: This toilet tank flapper fits most toilets with a 2 inch flush outlet; Crafted from quality, corrosion resistant rubber, it is both sturdy and flexible; This toilet flush flapper perfectly resists the erosion of chemical elements and hard water, keeping it clean and bright as new for a long time; Its excellent sealing performance effectively prevents water leakage problems
Stable and Adjustable Front Toilet Flush Lever: This toilet lever is made of solid brass with a metal surface treated handle, which has strong load bearing capacity, resists corrosion and is not easy to rust, ensuring a long service life; This toilet tank lever is side mounted and has three length adjustment holes to meet your specific length needs and can be bent to the correct angle for your toilet tank
Toilet Repair Kit Inside Tank: Package Include 6 x toilet fill valve replacement kit with water supply regulator, 6 x toilet flapper replacement kit, 6 x toilet lever replacement kit; This toilet tank kit fit most US toilet tanks
Easy Installation: Our toilet float replacement kit is well designed and easy to install; Just follow the detailed instructions included and you can install it in a short time and enjoy the convenience and comfort of a quality toilet tank

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8.1

Fluidmaster

Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor

Main Highlights

The PerforMAX fill valve and 3 in. Flapper Kit is the top solution to make your 3 in. flush valve toilet run like new!

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8.1

Save 5%

Fluidmaster

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

5% Off

Main Highlights

Fix cracked fill valves and running toilets in one kit
Easy to install
Universal design fits most 2" flush valve toilets
400A toilet fill valve height easily adjusts between 9 in. to 14 in. to fit more tanks
Solid frame flapper resists twisting for a secure seal, Durable build, 5 year warrany

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Our Best Overall Choice

Best Choice

9.7

Fluidmaster

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

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Fix noisy, or slow filling fill valves with the quietest, most powerful toilet fill valve available
Easy to install, step-by-step instructions included
Universal fit for most toilet models and brands
Tank and Bowl water level adjustment dials to customize the perfect flush and save. EZ-Twist height adjusts from 9 in. to 14 in. to fit more tanks

Show Price

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