Toto THU500S Toilet Flapper
WHAT OUR CUSTOMERS SAY…
“They had my part shipped the same day. I mistakenly checked that I would pick the part up at the store and they fixed it in minutes. ”
-Michael F.
01/04/2026
$21.47
At TOTO, we’ve always been inspired by a desire to improve everyone’s quality of life. Through almost a century rich with innovation, TOTO has changed the perception of what a bathroom can be — and how it can be used.
We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.
Toto Toilet Flapper
- Replacement flapper for 3″ flush valves
- Replaces THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, THU369S, and THU499S
- Red flapper
THU500S
Common questions about this product
Is this item the original manufacturer's recommended replacement part?
Yes, this is the OEM recommended part.
Is this the correct item for my application?
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.
WHAT OUR CUSTOMERS SAY…
“Order received and installed.
Thank you very much (spoken mentally in my best Elvis voice). Really is nice to know that there is still a business out there that's got their act together!
Appreciate the quick service and correct parts shipping.
Thanks again.. jP ”
-Jack P.
04/02/2026