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Kohler K-1237539 Fill Valve Service Kit

Black plastic fill valave with yellow cap white plastic nuts and black rubber washers.
Kohler K-1237539 Fill Valve Service Kit - Image 2

chat iconWHAT OUR CUSTOMERS SAY…

“Just want to say THANK YOU for your help with this! I couldn't believe the handle arrived Thursday (after ordering Wednesday). I brought it up to my dad's house Friday and just looking at it I didn't think it was going to fit....but it fit perfectly. So appreciative for your expertise and quick shipping! ”
-Ashley K.
02/04/2023

$27.17

 

The Kohler K-1237539 is a genuine fill valve service kit used for repairing specific Kohler one-piece toilets.

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: 54539 Category: Tag:

Kohler Fill Valve 

 

K-1237539

 

  • The fill valve is a critical component in a toilet tank that controls the flow of water to refill the tank after flushing. This service kit allows the user to repair the existing fill valve by replacing internal components like the diaphragm and O-ring.
  • This genuine Kohler part is specifically designed for use with certain one-piece toilets, including the San Souci K-5172, K-4007, K-4000, and K-8687 models. It is compatible with various Kohler toilets produced between 1990 and 2001.

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…

“Holy guacamole! They had a part moen had out of stock, shipped the next business day, and got to me the next day Ohio -> Tennesse. Super happy, double packed for safe shipment. I couldn't be happier unless they installed the part for me! ”
-Brian D.
06/08/2025