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

Kohler 51531 Tank Gasket

Bright red silicone gasket.
Kohler 51531 Tank Gasket - Image 2

chat iconWHAT OUR CUSTOMERS SAY…

“This place is amazing. I live in San Antonio, Texas and there are a few plumbing stores with vintage parts but they never have what I need and the ordering process takes them weeks. I found a rare part at Noels by reverse image search but they will do it for you. I've used them 3 times. Their agents are knowledgable and polite. They will find you the same part or the after market part and get you going on your way. They have 2-3 day shipping. My house was built in the 30's and they know exactly what the after market parts are that I need. I save money and time going to them. I sure wish they were in San Antonio! I will just go directly to Noel's next time - they are LEGENDS! ”
-BP W.
06/21/2026

$25.17

 

The Kohler 51531 (or K-51531) is a genuine OEM toilet tank gasket, designed to create a watertight seal between the toilet tank and the bowl. It is a replacement part used for plumbing repairs in various Kohler toilet models, including the Wellworth and Water-Guard series.

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: 951531 Category: Tag:

Kohler Tank Gasket

 

  • Kohler GENUINE Part
  • Made with durable material for a long lasting seal
  • Fits Cayuga toilet K-3440
  • Fits Wellworth Highline Trylon Barlow K-3510 K-3512 K-3514

 

51531

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…

“Recently I purchased a rebuild kit for my American Standard R series bathtub faucet. I want to say thank you for carrying this product. The rebuild kit worked beautifully and I was able to save the original look and feel of our 1957 bathroom. Thank you! ”
-Adam T
04/11/2024
Account