Flapper for Toto THU138S
WHAT OUR CUSTOMERS SAY…
“I texted him a picture of the shower part from the 50’s I needed and he was able to identify it immediately. I ordered it and it showed up in two days! Very knowledgeable and friendly! ”
-Jim F.
02/04/2026
$14.87
Toto Flapper for G-Max
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.
Flapper for Toto Toilet
THU138S
Customer submitted image of the flapper and toilet tank this flapper repairs.Â
Common questions about this product
Will this item replace the original OEM part?
Yes, this aftermarket part will replace your OEM part.Â
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…
“Noel's Plumbing Supply found this place on Google maps. In and out service. The person I was speaking to the desk offered me a selection knew exactly what I needed price was really reasonable. You don't know how much it means to a homeowner to be able to come in without any run around trying to sell you something you don't need. I recommend this establishment to all my family and friends. ”
-Steve C