Fluidmaster 555C Flush Valve Repair Kit with Flapper

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WHAT OUR CUSTOMERS SAY…

“Do you need a vintage plumbing part and nobody seems to be able to find it in your area? Save yourself time and hassle and go to Noel's Plumbing website. You can text them a photo of the part and they will find it in minutes and give you the link to order it, all at a competitive price. My plumbers seem incapable of doing this and hand the job off to me. What can you do? But Noel's always has the 1930s parts I need or the aftermarket part that will get the job done. If I need it fast I can get it in 2-3 days from them and they know exactly what they are doing. It's a good old-fashioned plumbing store with all the parts you could possibly need and people who know how to get them. The service is top level. The staff pick up the phone after one or two rings. They are polite and KNOWLEDGABLE. I'm so tired of dealing with folks who can't find a chicken in a hen house. LOL. ”

-Bry W.

06/23/2026

$13.47

Fluidmaster is the #1 toilet repair brand in the world. Fluidmaster parts are found in more toilets than all other brands combined. As a customer’s first choice and preferred supplier of toilet tank trim, Fluidmaster has been ingeniously engineering the internal flushing mechanisms of toilets for more than half a century. Built on and inspired by an unsurpassed history of innovation, Fluidmaster has become an icon in the plumbing industry. Fluidmaster’s reputation for superior quality continues to grow as retail, wholesaler and international trade business and OEM partnerships are cultivated, further establishing the company as an innovative leader and global supplier in the toilet care industry.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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Fluidmaster Flush Fixer Kit

Fixes leaks on both 1 and 2-piece toilets with a 2″ flush valve
Restores flushing performance
Best for toilets made after 1985
If you have replaced the flapper and the toilet is still running, the 555C will resolve the issue
The putty will work on plastic, ceramic and metal drain seats and will come off easily after years of use
No tank removal, very simple to install
Fixes damaged flush valve seats without removing your toilet tank
PerforMAX® adjustable flapper included which is removable
The higher the number on the flapper, the longer the flapper will stay open
Chlorine Resistant
5 year warranty

555C

Customer submitted images of the older style version of this flapper kit.

Common questions about this product

Yes, this is the OEM recommended part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

Yes, this aftermarket part will replace your OEM part.

WHAT OUR CUSTOMERS SAY…

“I sent in photos of a broken cartridge (still installed, couldn’t take it out myself due to water shut-off restrictions in a condo) and even with the limited view they were able to tell me the exact part I needed so I could have it ready for the plumber (meaning I didn’t need to pay for a plumber to come out twice!!) ”

-Alaina W.

06/27/2026