10 Best Toilet Fill Valve Replacement of 2025

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

April 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 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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9.5

Fluidmaster

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

Main Highlights

The PerforMAX fill valve and 2 in. Flapper Kit is the premium solution to make your 2 in. flush valve toilet run like new
PerforMAX toilet fill valve offers high performance with adjustable tank and bowl water for full water control
Fast and Easy to Install
PerforMAX Water-Saving Toilet Flapper included to save water use per flush
Adjustable fill valve height to fit more tanks, corrosion resistant flapper, Solid frame for a secure seal, 7 year warranty

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9.2

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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9.0

Kohler

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

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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8.8

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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8.6

Fluidmaster

Fluidmaster 400A-019 Brass Shank Toilet Fill Valve

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

Fluidmaster

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

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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8.1

jamini

Jamini Toilet Fill Valve Replacement Kit, Quick-Install Inlet Valve with Connector & Refill Tube, Fixes Slow Filling, Leaks, Noisy Tank, Universal for Most Toilet Tanks

Main Highlights

ENHANCE TOILET PERFORMANCE: Upgrade your toilet with the fill valve replacement kit for a quieter, faster, and more efficient experience. Solve issues like slow filling, leakage, and noise, while saving water and reducing your water bills
UNIVERSAL COMPATIBILITY: Compatible with most modern and older toilet tanks, featuring adjustable height (8.03-11.61 in) and water level range (3.74-9.45 in), making it easy to fit different models and install
SILENT AND WATER-SAVING: Enjoy a quiet bathroom environment with an efficient fill valve that quickly fills the tank while optimizing the water supply system, reducing water bills
cUPC CERTIFICATION: The inlet valve is cUPC certified, offering high-quality performance and ensuring safety and reliability during use, so you can enjoy long-term peace of mind
LONG-LASTING DURABILITY: Made from high-quality ABS/PP + fiberglass materials, it withstands harsh water conditions, resists aging, and provides long-term durability, reducing maintenance and replacement costs

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8.1

Korky

Korky 528T Replacement TOTO Toilet Fill Valve - Fits G-Max and Power Gravity Toilets -Easy to Install -Made in USA, Black

Main Highlights

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.

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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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