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

4.6 out of 5 stars 2,428 ratings
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Purchase options and add-ons

Material Plastic
Brand Fluidmaster
Item dimensions L x W x H 9 x 16 x 6 Centimetres
Exterior finish Plastic
Inlet connection size 2 inches
Inlet connection type Female Iron Pipe
Number of ports 2
Outlet connection size 2 inches
Specification met CSA, ULC
Valve type Globe Valve

About this item

  • Adjustable
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From the manufacturer

Fluidmaster Brand Logo
Fill Valve Performance
K-400H-039 Product Detail

The Fluidmaster K-400H-039 PerforMAX High Performance Toilet Fill Valve and Adjustable 2 in. Flapper Kit offers the top choice to fix your toilet’s performance and saving water.

This universal design, is made for 2 in. flush valve toilets including Kohler, Toto, American Standard and more. Quickly solve common toilet problems like noisy, leaky or running toilets. Featuring the high performance PerforMAX Toilet Fill Valve the quietest, most powerful fill valve on the market. Now featuring both tank and bowl water level adjustment dials, to quickly customize your water use.

  • The PerforMAX fill valve and 2 in. Flapper Kit is the solution to make your toilet run like new
  • 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
  • Built in Microban flapper fights breakdown due to bacteria on the flapper itself

Product information

Technical Details

Manufacturer ‎Fluidmaster
Part Number ‎K-400H-039-T14
Product Dimensions ‎8.99 x 16 x 6.05 cm; 385.55 g
Item model number ‎K-400H-039-T14
Size ‎Universal, for 2 In.
Colour ‎Multicolor
Material ‎Plastic
Shape ‎shape
Installation Method ‎Toilet
Item Package Quantity ‎1
Certification ‎CSA, ULC
Special Features ‎Adjustable
Usage ‎Inside; Amateur, Inside; Professional
Included Components ‎PerforMAX Toilet Fill Valve, 2-Inch Flapper
Batteries Included? ‎No
Batteries Required? ‎No
Warranty Description ‎7 Year Limited
Item Weight ‎385 g
Country of origin ‎USA

Additional Information

ASIN B09NYLJ1FZ
Customer Reviews
4.6 out of 5 stars 2,428 ratings

4.6 out of 5 stars
鶹 Rank
Date First Available March 25 2022

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Product description

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

Top Brand: Fluidmaster

Highly Rated
100K+ customers rate items from this brand highly
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10K+ orders for this brand in past 3 months
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Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit
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Price$34.95$28.99$25.51$41.08$47.66$49.12
Delivery
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Get it by Sunday, Jul 27
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Get it by Sunday, Jul 27
Get it by Sunday, Jul 27
Get it by Sunday, Jul 27
Customer ratings
4.64.6 out of 5 stars2,428
3.83.8 out of 5 stars17
4.44.4 out of 5 stars3,090
4.64.6 out of 5 stars498
4.44.4 out of 5 stars872
4.44.4 out of 5 stars490
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Customer reviews

4.6 out of 5 stars
2,428 global ratings

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Top reviews from Canada

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  • Pierre
    5.0 out of 5 stars .
    Reviewed in Canada on July 1, 2025
    Verified Purchase
    fonctionne bien
    Helpful
     Report
  • Scott N.
    5.0 out of 5 stars Perfect Fit
    Reviewed in Canada on May 4, 2024
    Verified Purchase
    I’m always leery about buying non-manufacturer parts (aftermarket) but this one fit perfect. Easy to install and easy to adjust after installed. I didn’t need the flapper, just the float mechanism but it was a great deal for both and I couldn’t turn it down.
    Helpful
     Report
  • Mick
    5.0 out of 5 stars Undoubtebly the best.
    Reviewed in Canada on October 31, 2022
    Verified Purchase
    They have Yoube videos for the fill valve, flapper model specific you must review for all the adjustments.
    Helpful
     Report
  • Gordon Kearns
    5.0 out of 5 stars It did the joe
    Reviewed in Canada on October 13, 2022
    Verified Purchase
    It did the joe fine
    Helpful
     Report
  • KEN G. ROACH
    2.0 out of 5 stars FLUIDMASTER K-400H-039-T14 PERFORMAX
    Reviewed in Canada on November 5, 2022
    Verified Purchase
    It seams OK except it leaks at the blue turn nob for water flow.
    Returning & getting a different one .
    Hope it does not happen to next one .
    Well they sent me a second one of these and this one leaks at the same place .. under the blue water flow turn nop . I guess these are not that good .
    DON'T BUY ...
    2 people found this helpful
    Helpful
     Report
  • Adrian KW
    4.0 out of 5 stars Super sturdy product and easy to install!
    Reviewed in Canada on February 24, 2025
    What an amazing product.
    Super simple to install, only had to use a channel lock to remove the bottom plastic nut. Rest of it is pretty much plug and play.
    And quality of this product is really another level
    Helpful
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Top reviews from other countries

Translate all reviews to English
  • alex agulian
    5.0 out of 5 stars High performance toilet fill valve
    Reviewed in the United States on December 28, 2024
    Verified Purchase
    I recently upgraded to the Fluidmaster K-400H-039 High Performance Toilet Fill Valve, and I couldn't be more pleased with its performance! This product has made a noticeable difference in the efficiency and functionality of my toilet.

    Installation was a breeze! The instructions were clear, and I had it set up in under 30 minutes without any need for professional help. The adjustable height feature is fantastic, allowing it to fit perfectly in my toilet tank without any hassle.

    What I love most about this fill valve is its quiet operation. Unlike some other models I've used in the past, this one fills the tank quickly and efficiently without the loud noises that can be disruptive. It's a significant improvement in my bathroom environment.

    Additionally, the valve has a powerful flush, ensuring that my toilet is filled effectively after each use. The anti-siphon feature adds an extra layer of security, preventing any backflow and ensuring clean water supply.

    The quality of the materials used is evident; it feels sturdy and durable, promising longevity. I've had it installed for a few weeks now, and everything is still functioning perfectly without any leaks or issues.

    Overall, I highly recommend the Fluidmaster K-400H-039 High Performance Toilet Fill Valve to anyone looking to upgrade their toilet's performance. It's efficient, quiet, and easy to install, making it a fantastic choice for any homeowner. This product has truly transformed my toilet experience!
    Report
  • ERNANDES DOS SANTOS MAIA
    5.0 out of 5 stars Bem satisfeito
    Reviewed in Brazil on July 1, 2025
    Verified Purchase
    Muito bom
    Report
  • James Mitchell
    5.0 out of 5 stars Great Product!
    Reviewed in the United States on July 8, 2025
    Verified Purchase
    When you need to fix a leaky toilet, you want something that works the first time you install, this is it, pretty easy install, just make sure you get everything tightened up after, Great Product!
    Report
  • Jerry Medders
    5.0 out of 5 stars Quick, Simple Installation. Flawless, Silent Performance.
    Reviewed in the United States on April 30, 2025
    Verified Purchase
    Changing out a toilet tank float is never my favorite project. When it became necessary, this item installed simply and flawlessly. The necessary level adjustment took only seconds. Installation took only a few minutes and it has performed perfectly and silently for months. I could not be happier
    Report
  • 鶹 Customer
    4.0 out of 5 stars Quality
    Reviewed in the United States on April 30, 2025
    Verified Purchase
    Ease of installation so far, everything is working fine no problems!
    Report