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Kohler 1037307 Toilet Tank Gasket

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

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-Matt F.
09/19/2025

$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.

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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.

 

 

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