Toilet Flush Valve Kit With 3 1/4" Flapper

Quickly delivered. Fit perfectly.

Replaced the flapper and I still had a slow leak which caused the tank occasionally refill. Was a easy install but you will need a 4 inch wrench. I bought a oil filter wrench at Harbor Freight and it worked good and it was a lot cheaper than a 4 inch spanner.

Everything Kohler is perfectly made. Directions quality replacement part’s everything worksAnd fits as it should. Such a pleasure working with quality made products

Nothing like a Kohler toilet with a large, non-standard valve. Unlike other plumbing manufacturers (mostly faucet makers) that provide the installer with a plastic socket to fit tighteners, Kohler tells you to use a 4" capacity channel-type pliers to remove and install the flush valve nut. Good luck with that. It'll cost you $40-$60 for a tool you'll use once or twice in your lifetime.I elected to make my own tool (see photo) using a 3/8" thick plywood scrap board. The octagonal shape of the nut requires 4" across each of the four pairs of flat sides, or 4.25" across opposing points (vertices). Start by marking the desired center for the hole and scribing a 4.25" circle with a compass. Next, draw a straight line through the center across the circle, thus locating 2 of the 8 vertices. Then use a protractor to mark 45 degree angles to locate the other vertices. (You can also use the compass to scribe arcs of sufficient and equal length from the two vertices so they intersect at 90 degrees from the starting line, then again to get the 45 degree angles.) I used a hole saw to cut a 3" hole to start, then a saber saw to join the vertices with straight lines. As you can see, it isn't necessary to be extremely accurate and cutting a little larger is better than too short. Locating the hole off center of the board facilitates rotating it by hand or with the aid of a hammer. The nut is extremely tight and you'll need the hammer, , unless you're Mr. Universe. Once installed, the valve is of good quality and works well.Another Kohler issue is the metal frame at the bottom of the tank into which the two bolts that join the tank to the bowl are very loosely positioned. It would be EASY to have one of these bolts fall off while you're positioning the tank -- possibly even dropping into the large opening to the bowl! The bolts are not iron, so a magnet won't help you retrieve it! This is a ridiculous design that should be addressed.

Kohler made two different flush valves for our toilet model. I finally got tired of having to wait around each time you use the toilet in our hall bathroom to insure the water refill valve inside the tank fills and then shuts off. I now have the same flush valve in our hall bathroom as in our master bedroom. It finally works great.

I am not a plumber, but have replaced many of these as well as other toilet parts over the years. The hardest part is removing the old part as it is usually hard to remove the large 3” nut that holds this part in place. I usually use plumbers grease on the new part to avoid this difficulty in future removals, if needed. Another important thing to remember is to tighten the nuts that hold the tank in place on the bowl, EVENLY. Make sure the tank is level side to side and front to back (use a two foot level across the top of the tank). Most importantly DO NOT OVER-TIGHTEN. You will crack the porcelain if you do.

It's discontinued so I truly appreciate having found it on Amazon. I first went to Youtube and found the Kohler Cimmaron toilet. That video showed me exactly what to order. I had a miserable time removing the old one as it was frozen. I found a big wrench that finally moved the valve and I got it off. Just waiting for the plate that was also caputz and spent a total of $50 to fix a toilet that just needed parts. Glad it worked out.

It’s a great product work as advertised

My toilets are 12 years old so it was time to do some maintenance, as the tank seal gasket was leaking. Only problem is having big enough channel lock pliers to take off the plastic nut on the underside of the tank. I had to buy a new tool for this.