Model # K-4899-58

Internet #203781188

KOHLER Tresham 1.28 GPF Single Flush Toilet Tank Only with AquaPiston Flushing Technology in Thunder Grey


Tresham 1.28 GPF Single Flush Toilet Tank Only with AquaPiston Flushing Technology in Thunder Grey

$20216 /each

Choose Your Options

Thunder Grey
  • Almond
  • Biscuit
  • Black Black
  • Cashmere
  • Dune
  • Ice Grey
  • Mexican Sand
  • Sandbar
  • Thunder Grey
  • White
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Frequently Bought Together

Product Overview

The elegant simplicity of Shaker-style furniture inspires the edgy, neo-traditional design of the Tresham collection. This stately 1.28 gpf toilet tank is accented by an elegant trim that recalls architectural molding. Complements the Tresham collection as well as a variety of styles from classic to modern.

  • 12 in. (30.5 cm) rough-in
  • 3-bolt installation - Three-pre-installed tank bolts save installation time
  • 1.28 gpf high-efficiency toilets provide significant water savings of up to 16,500 gallons per year versus an old 3.5-gallon toilet without sacrificing performance
  • Meets strict flushing requirements guidelines established by the Environmental Protection Agency's WaterSense program
  • Qualifies as a HET (high-efficiency toilet) - consumer rebates are available in certain municipalities
  • Polished chrome trip lever
  • Combines with the K-4799 bowl to create a complete K-3950 Tresham toilet
  • AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), increasing the power and effectiveness of the flush
  • Flush valve's 3: 2 ratio harnesses the natural force of gravity and optimizes flush performance
  • Durable canister design has 90% less exposed seal material than a 3 in. flapper, for leak-free performance
  • Light-touch canister flush requires a lower actuation force than a flapper
  • AquaPiston canister flush valve optimizes flush performance and resists warping and deterioration

Info & Guides

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Flush Valve Size (in.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Color Family
Thunder Grey
Commercial / Residential
No Additional Features
Flushing Mechanism
Gravity Flush
Flushing Technology
Gravity Fed
Gallons Per Flush
Vitreous China
Product Weight (lb.)
Trip Lever Location
Left Side

Warranty / Certifications

Certifications and Listings
ADA Compliant,CSA Certified
Manufacturer Warranty
One Year Limited Warranty

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Customer Questions & Answers

will this fit on any Kohler stool, I have one we bought in about 1997, will it fit?

Asked by: Anonymous
While it may fit (the attach points seemed to be standard Kohler dimensions), I wouldn't recommend it. The stool and tank are designed to work in tandem to optimize flush. You likely wouldn't get a satisfactory flushing result. And at worst, you would get a very poor result and may even lead to overflow situations.
Answered by: DIYGuyChicago
Date published: 2015-09-17

is this tank insulated or will it sweet with cold well water

Asked by: ed
Hello, my name is Jay with KOHLER Customer Service. I am happy to assist you with your toilet tank question. The 4899-0 is not insulated. We design our products with customers like you in mind. We would like to speak further about your concern. Please call our Customer Care Center at 1-800-4KOHLER. (1-800-456-4537). Thank you for choosing the Bold Look of KOHLER.
Answered by: Kohler Product Expert
Date published: 2016-06-15

is there a 10 inch rough in bowl that this tank will fit.

I love the style, but I cannot use a bowl with 12 inch rough in.
Asked by: Anonymous
Thank you for your inquiry. I am sorry but there is no 10" rough in bowl that the 4899 tank will fit.
Answered by: KOHLER Customer Service
Date published: 2015-09-17

I like this tank, is there a round white toilet that would go with this that also is available?

Asked by: Anonymous
Thank you for your inquiry. I wish I could offer you a round bowl , but we do not manufacture a round bowl to go with this Tresham Tank. The closest alternative I could find is the K-3511-0 KOHLER Memoirs 2-Piece Round-Front Toilet in White, with a link below.
Answered by: KOHLER Customer Service
Date published: 2016-11-02
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Customer Reviews

Tresham 1.28 GPF Single Flush Toilet Tank Only with AquaPiston Flushing Technology in Thunder Grey is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from Flush Quality Pleasantly Surprised Me! (1.2gpf) As part of a refresh of my bathroom, I set out to replace a 20 year old "traditional flush" toilet. You know, the ones that were tried and true for decades before the government got involved. I loved the look of the Tresham toilet and it fit our new decor perfectly. With images of poor flushing capabilities in my head, though, I was really uncertain of giving up what I knew already worked. So, I did some in-depth research and learned that some really scientific testing is performed by an organization in California (search "MAP testing for toilets" in your favorite search engine). They developed an analog that simulates human solid waste and their whole mission is to rate the effectiveness of every new toilet on the planet. They even have video demonstrations of their methods. Comfortable that the Tresham was top-rated and would likely perform, I ordered one. Installation was a breeze. If you've never had a high efficiency toilet before, there's no difference in how you install this. You will notice, though, that the guts of the tank are very different. And they've made them so you can't really game the system by increasing the flow. No matter, though. After 2 months of use, it has performed flawlessly. And there has been plenty of *stress* testing!! I highly recommend. Just know that not all toilets are created equally, so do your research and you'll be pleasantly surprised, too.
Date published: 2013-01-08
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