Fluidmaster 5403P4 Adjustable Water-Saving Long Life 3 inch Toilet Flapper
Fluidmaster 5403P4 Adjustable Water-Saving Long Life 3 inch Toilet Flapper
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Fluidmaster 5403P4 Adjustable Water-Saving Long Life 3 inch Toilet Flapper

4.7 stars out of 100 reviews
(4.7)|
100 ratings

Key item features

  • Water-Saving Design: Stop a running toilet and optimize your flush with the Fluidmaster 5403 Water-Saving Flapper.
  • Easy Installation: Quick and easy to install, featuring a universal design to fit most toilets with 3" flush valves.
  • Adjustable Performance: Adjustable dial for flush performance and water savings, allowing customization of water use per flush.
  • Durable Seal: Features a durable silicone seal that lasts up to 10x longer than standard designs.
  • Universal Fit: Fits most 3" flush valves, making it suitable for a wide range of toilet models.
  • Leak Prevention: Eliminate leaks, stop running toilets, and save water with this long-lasting solution.
  • Solid Frame: Solid frame ensures the best seal with no twisting, enhancing reliability.
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Current price is $10.87
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Customer ratings & reviews

4.7 out of 5 stars
stars100 ratings50 reviews
How item rating is calculated
  1. 5 stars80% (80)
  2. 4 stars11% (11)
  3. 3 stars5% (5)
  4. 2 stars2% (2)
  5. 1 star2% (2)

Reviews summary

Pros
  • : Installation is a simple and fast experience.
  • : Forms a secure seal to prevent water leakage.
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Showing 1-3 of 50 reviews

Nov 2, 2025
Derek
Top Reviewer
5 out of 5 stars review

Verified Purchase

DIY Relace 3-inch Toilet Flapper

This was a replacement toilet flapper. I would suggest that anyone replacing this make sure you select the correct size toilet flapper. I didn't realize they come in various sizes, but I found the correct one for my toilet.

Helpful?6B4HLXIEXKH115840602
Aug 13, 2025
anonymous
Top Reviewer
5 out of 5 stars review

Verified Purchase

It's so nice, I gave it 5 stars in spite of the quirk in my toilet I hadn't realized. Mansfield has a model toilet that requires its own brand special flapper that isn't near as good as this one and doesn't last as long and costs the same. What a disappointment! But I adjusted this one beyond it's "universal"ness, and it still works great. Got the Mansfield replacement flapper for this toilet only (the arms where the flapper attaches are sized differently on each side, one side much larger), but this one I was able to get to work anyway, and this one is made to last.

Helpful?6B4HLXIEXKH115840602
Sep 5, 2013
2Handy
5 out of 5 stars review

Verified Purchase

Easy installation solves 3" flapper valve leaks

The flapper valve on my Toto toilet began leaking after about 6 years of use. The problem was caused by reduced rigidity of the rubber flapper valve. The Fluidmaster 5403 addresses this design issue by using a rigid plastic structure and a flexible gasket for more positive sealing. The adjustable attaching arms assure that the valve remains centered. The adjustable float allows you to regulate the amount of water used for flushing. This valve is a little more costly, however, it successfully solves a number of issues.

Helpful?6B4HLXIEXKH115840602