United States

Kohler

From a $20 flush valve to a frameless medicine cabinet, with dimensions on the page

What this site covers

Five Kohler products are reviewed here, across five shelves, all sold on Amazon.com on October 29, 2026:

The Willamette 4-inch centerset faucet, two handles, 1.5 gpm, drain included, at about $76.
The Brevia Quiet-Close seat, for elongated and compact elongated bowls, at about $31.
The 1083980 canister flush valve kit, a model-specific part, at about $21.
The K-33151 clicker drain for a sink without overflow, at about $100.
The frameless medicine cabinet, 20 × 26 in in anodized aluminum, at about $145.

What Kohler puts in writing

Fit dimensions. The Willamette publishes 5.32 inches of reach, 5.22 of height and a 1.625-inch maximum deck thickness — the figure that rules a faucet out on stone. The Brevia states the compact elongated fit most seats leave out. The medicine cabinet names its metal, anodized aluminum, and a 108-degree door swing.

Model-specific parts. The 1083980 flush valve fits one tank family, and Kohler says so. That honesty is the point of buying the maker’s part.

What the listings leave out

No warranty term on the Willamette’s Amazon.com page, and its description still says it is sold exclusively at The Home Depot. No seal material on the flush valve. No dimensions or warranty on the $100 drain, against a $35 KRAUS that publishes both. And the Brevia warns that opened seats cannot be returned to Kohler.

Against the other names

Kohler is the only maker on this site present on five shelves. Its strength here is fit information; its weakest page is the clicker drain, which costs nearly three times the KRAUS on the same shelf and documents less.

Every Kohler product we have reviewed

Toilet flush valves and fill valves

Kohler 1083980 canister flush valve kit

Genuine Kohler 3 in toilet canister flush valve kit featuring a 3 in canister with a 3 in outlet, compatible with the Kohler Cimarron tank model number K-4634 and explicitly stated not to be a universal part; the maker advises looking inside the back wall of the toilet tank to identify the tank model number, and states the valve was designed by Kohler engineers to maintain original product performance

A genuine Kohler 3 in canister flush valve kit for the Cimarron tank model K-4634.

Best for: A Kohler Cimarron with tank K-4634 — and only that

≈ $21

Check price on Amazon Read the review: Kohler 1083980 canister flush valve kit
Soft-close toilet seats

Kohler Brevia Quiet-Close elongated seat

Elongated and compact elongated, 18 × 14.18 in · plastic · Quiet-Close · Grip-Tight bumpers · Quick-Attach hardware · quick-release hinges · 1-year warranty

A KOHLER plastic seat with Quiet-Close, Grip-Tight bumpers that stop it sliding, Quick-Attach hardware and quick-release hinges — and a fit for compact elongated bowls too.

Best for: A KOHLER or other compact elongated toilet, where a standard elongated seat would overhang

≈ $31

Check price on Amazon Read the review: Kohler Brevia Quiet-Close elongated seat
Medicine cabinets

Kohler frameless medicine cabinet, 20 × 26 in

Frameless 20 x 26 in bathroom mirror medicine cabinet in anodized aluminum that resists rust and chips, with mirrored surfaces inside and out, two adjustable tempered-glass shelves, and a full-overlay mirrored door with beveled edges; two-way adjustable hinges opening a generous 108° for unobstructed access to every shelf; hardware included for surface-mount or recessed installation plus a side mirror kit for a polished surface-mount look; left-hand or right-hand door swing

A frameless anodized aluminum medicine cabinet with a mirrored interior and 108° hinges.

Best for: A bathroom that gets properly steamy, and anyone who wants the cabinet to be the same in ten years

≈ $145

Check price on Amazon Read the review: Kohler frameless medicine cabinet, 20 × 26 in
Pop-up sink drains

Kohler K-33151 clicker drain

Clicker drain without overflow, polished chrome · 1 1/4 in (32 mm) connection · metal build

A clicker drain without overflow, with a 1-1/4 in connection and a brass tailpiece, in polished chrome.

Best for: A Kohler sink and a Kohler faucet, where the finishes have to be the same and the paperwork has to say Kohler

≈ $100

Check price on Amazon Read the review: Kohler K-33151 clicker drain
Bathroom faucets

Kohler Willamette 4 in centerset faucet

4 in centerset · 2 lever handles · 1.5 gpm · ceramic disk valves · drain included · vibrant brushed nickel

A two-handle 4-inch centerset bathroom faucet from Kohler at 1.5 gpm, with ceramic disk valves, a drain and its tailpiece in the box.

Best for: Replacing an old two-handle faucet on a standard three-hole sink drilled at 4 inches

≈ $76

Check price on Amazon Read the review: Kohler Willamette 4 in centerset faucet

Prices quoted in these summaries are dated readings. The live price is shown next to each product.

What this site covers

What Kohler puts in writing

What the listings leave out

Against the other names

Every Kohler product we have reviewed

Kohler 1083980 canister flush valve kit

Kohler Brevia Quiet-Close elongated seat

Kohler frameless medicine cabinet, 20 × 26 in

Kohler K-33151 clicker drain

Kohler Willamette 4 in centerset faucet