513-721-5286 | 1-888-Ask-Noel | Mon-Fri: 8:00 AM – 5:00 PM
Account

Kohler 1037307 Toilet Tank Gasket

Light grey foam rubber tank gasket.
Light grey foam rubber tank gasket.
Kohler 1037307 Toilet Tank Gasket - Image 3

chat iconWHAT OUR CUSTOMERS SAY…

“I just wanted to thank you for your incredible service! I ordered Sterling Chrome Plate Handles on Monday late afternoon and they arrived today, Thursday early afternoon. They are exactly what we needed and are now installed and working perfectly. You are the BEST!!! ”
-Margaret Z.
10/20/2022

$9.47

 

The Kohler 1037307 is a genuine OEM replacement tank-to-bowl gasket designed specifically for Kohler pressure-assist toilet tanks. It provides a watertight seal between the tank and the bowl to prevent leaks during flushing.

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: 12922 Category: Tag:

Stop leaks at the source with the Kohler 1037307 Tank-to-Bowl Gasket. Engineered specifically for Kohler pressure-assist toilets, this high-quality black rubber gasket ensures a watertight, secure seal between your toilet tank and bowl, preventing common leaks in high-performance fixtures. This genuine OEM part is designed for longevity and easy installation, making it the perfect choice for DIYers and professional plumbers alike.

 

1037307

 

  • Provides a secure, watertight seal between the toilet tank and the bowl, preventing leaks.
  • Made from high-quality, durable rubber.
  • Designed specifically for use with various toilets that utilize the Sloan Flushmate pressure-assist systems, particularly the K-503 series pressure-assist tanks. It is not for use with standard gravity-flush toilets.
  • The part is designed for easy installation, allowing you to replace a worn gasket without the help of a plumber.
  • The inner diameter is approximately 2-1/8 inches, and the thickness is around 1-3/16 inches.

 

Related document

 

Kohler Highline Classic Toilet Tank 1.6 gpf Parts Breakdown

Common questions about this product

Is this item the original manufacturer's recommended replacement part? chevron-icon

Yes, this is the OEM recommended 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…

“Hey these guys are awesome! If you need a part for a fixture they have it send a picture and they can tell you what it is, they know their stuff, they have the weird obscure things you can't find unless you get a whole trim kit or whatever. Worth the trip and the money. They save you tons of time definitely visit ”
-Justin H.
06/05/2026
Account