OEM Original Replacement For Sloan C-100500-K Flushmate Cartridge/PowerFlush Toilet Piston Cartridge Parts for Use with 500, 501, 501A, 501B, 503, and 504 Series Flushmate Tank System (1)

Quality cartridge that is working well so far. I've tried some other ones in the past that did not hold up, but so far so good with this one. The only negative aspect is the cost is more than the aftermarket ones. But that's to be expected. In this case, it seems as though the price is worth it, knowing that you are likely going to get something that lasts longer. It's interesting that for the most part they all look the same, but I suspect the internal tolerances and spring action are tighter controlled with this OEM product.

This is the Flushmate factory OEM part. It fits and works perfectly.

Producto de buena calidad, trabaja perfectamente, lo recomiendo.

Fixed issue and perfect fit

A little expensive but works very good

Works as advertised and installing was fairly simple. There are plenty of videos online showing how to replace these, and you only need a few tools (combination screwdriver, and tongue and groove pliers). It was a lot cheaper than a new toilet and this was a pretty good relative value.

Work very well thanks.

Update 1/2/2024:I installed this cartridge a few days ago. Two days later I wanted to check on it, so I took the lid cover off and did a flush, and noticed that a bit of water was spraying out of the center actuator when it flushed. It was not doing this when I installed it, as I left the lid off a day to make sure it didn't need any adjustments. So 48 hours it now has water spraying out of the center actuator each flush. I contacted the seller about this and got a reply. They said it is a genuine Flushmate cartridge, just that the package changed in 2022 and no longer says made in USA, but I stead has the address of where it's made in Michigan. They also said that water should not be spraying out of the center, so they worked with me to replace it. Hopefully the new one will work and not have this same issue. So it is good customer service from the seller and is a OEM Flushmate cartridge, but still the quality of the Sloan Flushmate company making it isn't good like they use to be, as a brand new cartridge should not have a defect right out the package.------------Original review.I have a Kohler toilet with the Sloan Flushmate 503 factory installed. I've been using it since 2007.For the first 8 years I had no problems and then started to have issues with the original cartridge running and filling with water at random times. I adjusted the cartrage and it fixed it for a while, but continued to happen. I called Flushmate and they sent out a free replacement cartridge. Installed it and no problems. Fast forward to 2020 and the Flushmate 503 bladder started to leak, had several pinhole leaks. I called back and they said there was a manufacturing defect recall and would send out a free replacement. I had to take the entire tank apart, remove the entire Flushmate 503 and installed the new one. Right away it seemed like it wasn't flushing as strong, like there wasn't as much "pressure". But it still worked. Then about a year later in 2021, that cartridge started to go bad with having to press it several times to flush. When I took it out, the actuator spring was very loose and the bottom was falling apart. Flushmate said there was no warranty and if have to buy a new cartridge. I bought one from Amazon that was a different listing than this one, and it was a genuine Flushmate cartridge, package said Made in USA with the Flag next to it. It lasted a little over a year until the end of 2022 and needed replaced. I went back to that listing, but that listing showed it was no longer in stock. I bought this one, and since then I've had to replace it twice, they are only lasting about 5-7 months before going bad. The packages "look" like the Flushmate package, but it NO LONGER says Made in USA on the package with the flag...it doesn't say where it is made. Also, the "top cap" that screws on the cartridge stem doesn't say "Flushmate" in white letters, but this one is black letters (see pictures). So I have no idea if this is a real genuine Flushmate cartridge or not, or where it's made. All I know is that they are only lasting several months before going bad.