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Model # K-GP51487

Internet # 202524249

Store SKU # 510949

Triangle Tank Gasket with Bolts for Most Two-Piece Toilets

This item has been discontinued.
The Home Depot no longer carries this specific product.

$12.98 /each


Model # K-GP51487

Internet # 202524249

Store SKU # 510949

Store SO SKU # 1000724054

This triangle-shaped KOHLER Tank Gasket with Bolts features durable rubber construction and includes brass hardware for easy installation. This KOHLER Genuine Part will assure the proper fit and quality one expects. KOHLER Genuine Part.

  • Genuine KOHLER part
  • Rubber material
  • Triangle shape
  • 5 in. L x 6-3/4 in. W
  • For use in toilets (sold separately)
  • Brass hardware included for easy installation
  • Please see the Replacement Part List PDF to the right to view all items this part is compatible with

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
5 in 
Product Thickness (in.) 
1.5 in 
Product Width (in.) 
6.75 in 
Hardware Included 
Plumbing Part Type 
Warranty / Certifications
Manufacturer Warranty 
One Year Limited Warranty 


Rated 4.2 out of 5 by 35 reviewers.
Rated 4.0 out of 5.0 by Kohler toilet gasket It was the proper gasket for my Kohler toilet.... you cannot use the "Universal toilet kit" for the gasket between the tank and toilet bowl for Kohler :). All the "guys" I talked to told me to just remove the Two screws and remove the tank. When I told them there were THREE screws, they all looked at me like I had three eyes. KOHLER toilets have three and require this special gasket. Once I took the toilet apart, found the piece I needed online at Home Depot and fetched it, I was once again with a working toilet. December 30, 2014
Rated 5.0 out of 5.0 by Perfect Fix Toilet tank was leaking from the bottom, the gasket between the tank and bowl section had rotted. This was as easy fix and has worked perfectly. Cheaper than a new toilet and very easy to install. April 10, 2015
Rated 5.0 out of 5.0 by KOHLER Model # K-GP51487 Triangle Tank Gasket with Bolts for Most Two-Piece Toilets Although initially upset that I needed another part to repair my toilet, I became convinced that securing the tank to the bowl with 3 bolts instead of 2 bolts was a much better design, providing more stability to the tank. I installed this product a few days ago, along with the Fluidmaster Model # 400AKRP10 toilet repair kit. Installation was easy, and the seal created between the toilet tank and the bowl seems to be better than the conventional 2-bolt system. There are no leaks, and hopefully the gasket will be trouble free for many years. May 19, 2015
Rated 5.0 out of 5.0 by Koehler tank gasket First I bought a "Universal" gasket but it was obvious when I took the tank off of the bowl that I needed the Kohler gasket and the universal one would not work unless I made some changes to it. Bought this gasket and installed it in about 10 minutes and the leak is gone. This was an easy fix that anyone could do. January 5, 2015
Rated 5.0 out of 5.0 by Great product Does exactly what it is made for, easy installation but by far the most expensive gasket I've seen. Comes with tank bolts with black hard plastic heads to avoid rusting. Forgot to mention the most important part... The gasket seals very well and the quality of the seal enhances as you tighten the bolts. March 11, 2014
Rated 5.0 out of 5.0 by Kohler OEM part Fits the tank and bowl to make a leak free seal. Had to call manufacture to know how much torque is needed on the bolts. Manufacture stated to not completely tighten down flush with the tank bottom. May 26, 2015
Rated 4.0 out of 5.0 by Kohler tank repair kit Easy to install and now the toilet works like it was new. May 19, 2015
Rated 5.0 out of 5.0 by Works well Bought a universal bolt and washer set for a leaky Kohler toilet. When I took off the tank, I discovered the triangle gasket. Tried to install with the universal kit, but could not keep it from leaking. Bought the Kohler triangle kit and it worked like a charm. April 21, 2015
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