Kohler K-GP83888 Toilet Flush Valve Gasket Seal
WHAT OUR CUSTOMERS SAY…
“Fast, friendly, knowledgeable, hard to find items not carried by most big box stores. ”
-William S.
02/23/2026
$10.87
Protect the warranty on Kohler products, always look for the Kohler GENUINE Parts logo. Kohler GENUINE Parts are designed by Kohler engineers to maintain original product performance and promote product longevity.
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.
Kohler Toilet Flush Valve Gasket Seal
- Kohler GENUINE Part
- Replacement flush valve gasket for various one-piece Kohler toilets
- 2″ gasket seals flush valve to the tank
- Gasket has one ridged edge
K-GP83888
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…
“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