Where to purchase flapper for toilet #4215A in Canada

The most common reason for a toilet to continue to run is a problem with either the flapper or the entire flush valve itself. The water is slowly draining so the fill valve keeps running.
The flapper is the least expensive and easiest solution, so start their. It's usually around $5. If that doesn't solve the problem, I would purchase a flush valve kit, around $20, and replace your flush valve.
*Note: If you have to replace the flush valve, you have to take your toilet apart. Start with the flapper.

Usual issue is a worn or misaligned flapper. Could also be worn parts in the fill valve.

universal flappers fit all different ways you may have to cut or alter the tabs or o-ring to make it sit right also check chain is set right

Start with the flapper. They tend to dry up especially with water that contains chlorine. Purchase the American Standard flapper if available for that toilet. Works better than generics.

My toilet had same problem:
I thought it was a clog in the drain pipe.
But the problem was clogged holes where water flushes into toilet bowl.

Here's how I fixed problem.
Purchase:
Gallon of CLR calcium-lime-rust remover from Home depot.
Pumice stone from hardware store.

Home supplies:
Cut off bottom of empty clorox bottle to make container for CLR
Old 3" paint brush you don't use for anything else to apply CLR
Small cup to pour CLR into toilet flapper opening

Steps:
Look inside toilet bowl under rim and see holes where water comes out
Use brush and apply CLR to holes where water comes out.
Use pumice stone to scrape ... pumice stone will not hurt toilet surface.
Flush toilet to clear holes so far.
Turn off water to toilet.
Open flapper to drain tank.
Keep flapper open.
Use cup and pour dose of CLR directly into flapper opening.
(You can also pour CLR down overflow tube... but flapper opening puts whole dose directly onto problem)
Pour another cup of CLR into opening.
Notice how CLR starts coming out the holes into bowl.
Pour CLR down flapper hole until it runs easy and fast out of holes.
Close flapper, turn on water, toilet fixed.

Hello, I can assist you. The flapper part number you need for replacement is GP1078440. You can purchase this item from any of our authorized locations. To find a showroom location near you please visit www.Kallista.com or call our customer service team at 1-888-452-5547.

Hi,
Yes, for many toilets you need to get the exact flapper to make them seal properly...the generic will often not work properly..

heatman101

Some toilet flappers are designed with this some are not. It has to do with the particular flapper design, helping the flapper to stay in the open position to allow a better flush. Anyways you should be to adjust this float up or down to optimize it's usefulness. Trial and error is all you can do, keep watching and flushing until it no longer gets in the way. I hope this helps in at least knowing that for your toilet and the flapper you have, it's suppose to be there. Good luck and thanks for using FIXYA and have a great weekend. Jeff

One of two things is the problem. First, make sure that you have a tight chain with little slack. If there's too much slack, the flapper won't catch in the passing air to stay up. Second, the flapper is not correct for that style of toilet. You might want to look into purchasing a new Kolby filter that has a removeable cone in the center. Move that cone to 12 o'clock to allow the maximum amount of water to run through the flush valve. If the flapper you have now is flat, it needs to have a cone in the center on the underside.

You need to replace the flapper and you will need to purchase one specifically for the Kohler toilet. I have the same toilet and tried using a generic flapper and from experiance, it didn't work until I bought the correct one and I'm a plumber! Have a great night.