Kohler K-GP1039444 Class 5 Toilet Flapper for One Piece Toilet

Bright red rubber flapper with stainless chain.

Kohler K-GP1039444 Class 5 Toilet Flapper for One Piece Toilet - Image 3

WHAT OUR CUSTOMERS SAY…

“I was very happy with Noel’s Plumbing. I was searching for a fairly rare part and saw it listed on their website. After placing my order, I was informed that the item was actually on backorder. Noel’s Plumbing was upfront and honest right away, letting me know it might take some time to arrive. Throughout the wait, they consistently kept me updated, which I really appreciated. When the part finally came in, they shipped it out immediately. It arrived exactly as described and was precisely what I needed. Excellent communication, honesty, and follow-through. Thank you, Noel’s Plumbing! ”

-Dave F.

04/04/2026

$20.17

The Kohler GP1039444 is a genuine Kohler 3-1/4 inch toilet flapper for specific Kohler one-piece toilets with Class Five flushing technology, designed to provide a reliable seal and prevent water loss.

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.

SKU: 91039444 Category: Toilet Flappers Tag: Kohler

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Kohler Class 5 Toilet Flapper for One Piece Toilet

The flapper is a crucial part of the toilet’s flushing system, controlling the flow of water from the tank to the bowl and creating a tight seal when not in use.
This part is not universal and is made specifically for certain Kohler one-piece toilet models.
Kohler GENUINE Part
For One-Piece toilets with 3 1/4″ flappers
Compatible with the following Kohler models: Cimarron® 3489, 3802, 11889, Memoirs® 3451, 3453

GP10394444

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