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Flapper for Toto Power Gravity THU140S

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“I spent the balance of 3 days looking locallyfor a replacement head for our Kitchen sink...only to find these guys with an exact fit and finish and lower than market pricing...I immediately ordered (an awesome website with smooth cart checkout). 20 minutes later I find a blown out gasket/ring that I was able to replace, and avoid having to replace entire spray head. I text there support line ( while the store was closed!) Requesting the order to be canceled. Within minutes and without hesitation or questions they had refunded my card and canceled the order. They have one of the largest online inventories, notably stocking harder to locate stuff and boasting a separate text line dedicated to recieve customer pics of parts/gear to ensure we are getting exactly what we need. Enough said. Bring your future plumbing problems/needs here and trust you will be taken care of...I know I will... @ Noels, thanks for continuing a tradition of honorable business practice, in a world that is littered with allot less... ”
-John M.
03/14/2026

$19.47

 

The Fits TOTO 3 inch Flapper by Korky features an oversized sealing surface to fit large 3 inch TOTO flush valves. The exclusive longest lasting blue rubber resists chlorine, bacteria, city water treatment, hard water, and well water. Replacement for TOTO flapper model THU140S. This type of toilet flapper is made of flexible rubber for a tight seal and easy to install, the 2022 includes: (1) Large 3 inch Flapper and (1) Stainless Steel Chain. Fits the following models:

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.

SKU: 92022BP Category: Tags: ,

Is a worn-out flapper causing your toilet to hiss or continuously run? The TOTO THU140S Replacement Toilet Flapper provides a secure, watertight seal that stops phantom flushes and lowers your monthly water bills. Specifically engineered for TOTO Power Gravity toilets, this premium blue rubber flapper features an oversized sealing surface to perfectly fit large 3-inch flush valves.

 

THU140S

 

  • Replaces TOTO Toilet Flapper model THU140S
  • Easy to install, the Toilet Flapper is made of flexible rubber for a tight seal
  • Exclusive longest lasting blue rubber resists chlorine
  • Made in the USA

 

Fits TOTO Toilet Models:

 

CST854, CST864, CST866, CST884 and CST924154F.

Please note: Toilet flapper does not fit the following TOTO models: CST853, CST853E, CST853S, CST863, CST854E, CST854S, CST863E, and CST864E.

Common questions about this product

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM part. 

Is this the correct item for my application? chevron-icon

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.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“I have been here a few times. And I have found it the most helpful and best place I've been to in this area. They explain to me what I need not what I'm trying to tell them what I want. Would recommend to anybody who needed help and plumbing parts. ”
-Joey F