Fluidmaster 3" 5403 Universal Toilet Flapper

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Red plastic flapper with black rubber seal and stainless chain.

Fluidmaster 3" 5403 Universal Toilet Flapper - Image 2

WHAT OUR CUSTOMERS SAY…

“Really great experience getting parts for my 30-year old frost free silcocks. They not only had the parts available, but they were shipped within a couple of hours. Great job, thank you! ”

-Phil R

02/08/2026

$24.17

Stop your running toilet instantly and cut down on water bills with the Fluidmaster 5403 Universal 3-Inch Toilet Flapper. This high-performance plumbing replacement part is engineered to eliminate ghost flushing, leaks, and noisy tank fills in newer, high-efficiency toilets. Built with a heavy-duty solid frame and an adjustable water-saving dial, this 3-inch flapper optimizes your toilet’s flush volume while providing a leak-free seal that stands up to hard water.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, asknoel@noelsplumbingsupply.com, or via the text widget on this screen.

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The Fluidmaster 5403 is a universal adjustable 3-inch toilet flapper designed to stop running, leaking, or “ghost flushing” toilets. It is engineered for modern, high-efficiency toilets (1.28 to 1.6 gallons per flush) manufactured after 1994.

5403

Stop a running toilet and optimize your flush with the 5403 Water-Saving Flapper
Universal – Fits most 3” flush valves
Fits American Standard®, Kohler® Cimmaron, Toto® and other toilets
Easy to install
Adjustable dial for flush performance and water savings
Long lasting silicone seal
Chlorine and hard water resistant**
Solid frame for the best seal- no twisting
10 year warranty

Common questions about this product

Yes, this is the OEM recommended part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

Yes, this aftermarket part will replace your OEM part.

WHAT OUR CUSTOMERS SAY…

“It is so nice to see you guys are still rocking and providing the best service for unique plumbing parts. I first used you guys 20 plus years ago when my brother turned me on to you. I live in Nashville now and was searching the entire region for a particular cartridge and you are the only one that had it. Hands down there's not many like you and you've always provided a great service and I'm glad to see you doing it now even online! ”

-James

01/11/2022