Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this toilet repair kit for its completeness and ease of installation. The kit includes all necessary parts—flappers, fill valves, bolts, washers, and specialized tools—eliminating guesswork and extra trips to the store. Many report straightforward installation with clear instructions that work on older and unusual toilet models. Reviewers consistently confirm the kit successfully stops leaks and restores aging toilets to working condition. A few encounter compatibility issues with certain models or receive occasional defective parts, though warranty service resolves these quickly. Overall, most customers find it highly effective and worthwhile.
Customer review summary generated by AI, including incentivized reviews.Fixed the leaking toilet issue
Would RecommendGreat product, came with the tools needed to install all the parts.
Verified Purchaser
Good product
Would RecommendEasy installation. My wife installed it.
Verified Purchaser
Product is not very reliable, leaks,wastes water.
Would Not RecommendThe fill valve leaked. I called Fluidmaster and was instructed to disassemble the fill valve and flush. No improvement. Called again and told to remove rubber gasket and heat in 120 deg water for three minutes. Valve still leaked. Was told the problem is because the product could have on the shelf for a long time. Requested new fill valve assembly.
Verified Purchaser
Toilet rebuild kit
The adjustable fill tube leaks I have installed 2 of the 4 bought a they both leak. It’s very slow but they leak !!!!!!
Verified Purchaser
Fluidmaster would like to learn more about your situation and provide some assistance. You can reach us through our chat service at fluidmaster.com, ...

Easy to install and works as it should
Would RecommendEverything worked/fit perfectly to replace the guts on a toilet that that was installed 25 years ago and was leaking at the flapper. Instructions are clear and it comes with plastic tools to complete the job for anyone lacking in tools. Also includes several gaskets for various brands.
Verified Purchaser
Easy to follow instructions — includes tools!
Would RecommendStep by step instructions, with pictures, made the removal of old parts and new installation easy. The tools were included and worked great!
Verified Purchaser
Flapper Valve was pre-warped
Would Not RecommendWhen you finally get everything back together... and... why is it leaking? My flapper valve that came with the kit was warped in the back. Luckily, the old flapper looked like the same model so I used it and the leak stopped. Still, if you buy something new, you expect it to all work correctly without defects.
Fluidmaster would like the opportunity to help, please contact Fluidmaster’s Technical Service Department to help with your product. We are available...

Flapper didn't seal
Would Not RecommendEverything went together and fit great, but when I was done, the flapper didn't seal and was leaking into the bowl. (New flapper, new overflow tube) When I felt around to see if there was anything obstructing the seal, a plastic part from within the flapper fell down into bowl fill part of the toilet. It'll be in there forever, hopefully won't cause a problem down the road. Still didn't seal I went to the local hardware store and bought the Fluidmaster flapper that doesn't have the adjustment...
Fluidmaster would like the opportunity to learn more and provide help. To get help visit our website Fluidmaster.com where you can find product infor...

It worked for me on a 46-year old Kohler
Would RecommendI liked everything except the plastic handle, which I did not use.
Verified Purchaser
Good product, except for the handle mechanism
Would Not RecommendFirst of all it works and has many options for various brands of toilets. Most parts work as intended, except the handle arm which is just too flimsy. It suppose to be bent to fit your tank but it is just too light weight so when the toilet is flushed it just bounces around and sometimes prevents the flapper from closing, or flips 180 degrees and keeps the toilet flushing. A two-flush mechanism would probably been a better choice but hindsight is always 20/20.
Verified Purchaser
Universal Toilet repair kit
Would RecommendEasy to install. Works as it should.
Verified Purchaser

Fluidmaster would like the opportunity to help, please contact Fluidmaster’s Technical Service Department to help with your product. We are available...