Fluidmaster 3" 5403 Universal Toilet Flapper

“Kohler K-GP87449 Blue Flapper without Float GP87449” has been added to your cart. View cart

Red plastic flapper with black rubber seal and stainless chain.

Fluidmaster 3" 5403 Universal Toilet Flapper - Image 2

WHAT OUR CUSTOMERS SAY…

“We were looking for a cartridge that not only matched the bottom holes but that would have the splines & you knew our cartridge had an additional piece which would not have spines on the new replacement We received the replacement cartridge yesterday; we replaced the old today & happy to say it fits perfect. Thank you for your great information and the speedy shipping. Should we need other supplies in the future, we will certainly contact your business. ”

-Leah l.

01/26/2023

$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.

Share on:

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…

“Outstanding fast delivery on two pieces of an ancient Wolverine bath stem for Kohler - from the early 40s I think. The new one has a different body design, but it screwed directly into the old hot/cold tree and was the exact 6" length. Forty eight hours after installation now, and all remains fine. Also, kudos to the people who set up the website and ordering process. Great work - clear photos and info ! PS: I'm not an employee or family...lol. I retired from electrical wholesaling here outside Chicago and I appreciate a good job. ”

-JM C.

07/31/2026