Fluidmaster K-400H-038-T4 PerforMAX 3 in. Everything Toilet repair kit, No Size, Multi
Condition: New
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This item is eligible for return within 30 days of receipt
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Availability:
In Stock.
Arrives
Thursday, Aug 21
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Features
- The 3 in. Everything Kit has all you need to fix your 3 in. flush valve toilet with one repair kit
- Easy to install, universal design fits 3 in. flush valve toilets, helpful install tools included
- PerforMAX fill valve offers the fast and quiet refill, adjustable tank and bowl dials for customized water-use and adjustable height to fit more tanks
- Adjustable flush valve eliminates cutting, simply twist to adjust height and fit most 3 in. flush valves
- Universal tank-to-bowl gasket for use with most any 3 in. flush valve toilets, including Toto, American Standard and more; Includes adjustable 3 in. flapper; Durable stainless steel hardware; 7 year warranty
Description
Fluidmaster K-400H-038-T4 PerforMAX 3 in. Everything Toilet repair kit, No Size, Multi
Manufacturer: Fluidmaster
Part Number: K-400H-038-T4
Item Weight: 2 pounds
Product Dimensions: 7 x 8 x 14 inches
Country of Origin: USA
Item model number: K-400H-038-T4
Size: No Size
Color: Multi
Style: Plumbing Fixture
Material: Plastic
Item Package Quantity: 1
Included Components: Fill valve, flush valve, flapper, gasket, tank lever, hardware, tools
Batteries Required?: No
Warranty Description: Warranty
Date First Available: July 7, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Aug 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: Plumbing Fixture
Ordered this when water started leaking from the tank. Couldn’t tell exactly where it was coming from so decided to replace all the innards. Could have replaced just the various gaskets where the different parts poke through the tank for probably $10, but $33 for everything to be brand new and avoid any future problems with those components seemed like a win. Before buying this, the #1 thing to check is the size of the flush valve hole. It’s either 2” or 3”. I read that most are 2”, bought a 2” kit and ended up with a 3” flush valve hole. Look up some videos on how to figure that out and check. With the right-sized kit, it was a very easy replacement job thanks to the well illustrated instruction manual and included tools. Let my 15-year old son lead the effort. He was able to do 95% of work with no questions. This is a great kit and I think you’ll be pleased with how it installs and functions afterwards.
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Reviewed in the United States on June 24, 2025 by Claire M Morris
Style: Plumbing Fixture
One day while cleaning the toilet I decided to open the tank and do my best to clean inside there too. But I noticed that the flush valve seal was starting to disintegrate. So I found this kit. I’m generally pretty handy but as I only have one bathroom in my home I was concerned about doing this myself. There are tons of videos on YouTube so you can get an idea of what you’re getting into with this, but you don’t need them for install. This kit comes with fabulous instructions! I have never been so pleased! It’s an actual booklet, in color, from different angles and everything is explained thoroughly! In good form, you also receive extra washers and nuts. If you’ve ever done any DIY at all, you should feel confident in using this kit for yourself. It is probably one of the best DIY purchases I’ve ever made. You know how you’re gonna get overcharged if you call a professional. You simply don’t need it with this kit. The only post install adjustments I needed to make was to tighten down the tank bolts a little bit more and change the tank water level. All of this is explained in the instruction booklet. If you’re nervous about it, watch some videos, get all the parts out of the package and understand how they work and read through the instructions for understanding before starting, but you can do it! Go for it! You’ve got this!
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Reviewed in the United States on May 31, 2025 by S. Vanburen
Style: Plumbing Fixture
This kit made replacing my old toilet parts way easier than I expected. The best part? It came with all the tools I needed, so I didn’t have to mess around with buying those big channel locks or anything extra. That was a huge plus. The instructions were pretty straightforward, and the parts felt solid. Took me about 15–25 minutes to swap everything out, and it’s been working great ever since. Flushes better, fills faster, and no more leaks! If you’re tackling a toilet repair for the first time, this is a great all-in-one option. Definitely saved me a trip to the hardware store.
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Reviewed in the United States on July 2, 2025 by Homerunrocks24
Style: Plumbing Fixture
The kit will replace all the internal parts of your toilet. I had no problems with the parts, except for the bowl-to-base rubber washers. I could not get them to stop leaking. I got two spare red rubber washers out of my spare plumbing parts box. Everything works now. The included tools helped with the installation.
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Reviewed in the United States on June 9, 2025 by msbrig
Style: Plumbing Fixture
Was exactly what I was hoping for. Added bonus was the VERY helpful install tools that accompanied the kit. Also the ability to make multiple different adjustments to accommodate my specific toilet made it a solid install. But please be smarter than me - and practically every other man out there- read the directions. I had to basically take it apart after installing - TWICE - because being a man I didn’t need to read the instructions!
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Reviewed in the United States on July 9, 2025 by bballbm
Style: Plumbing Fixture
The arm that the flapper clips on to in our toilet broke so I bought this kit since it conveniently had all the parts we would need to repair the toilet for a good price. It came with tools to remove the existing parts and allowed me to replace everything in the tank easily. I did have to use a crescent wrench to loosen the nut holding the tank to the rest of the toilet on one side since the green tool provided couldn't get a decent grip due to the small space the nut was located in, but otherwise this kit had everything. It also includes very straightforward directions with pictures and diagrams, as well as instructions on how to fine tune the amount of water in the tank and used in the flush. It makes it really easy as well as fast to repair leaky toilets for those without any experience.
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Reviewed in the United States on May 29, 2025 by Bethany Green
Style: Plumbing Fixture
Works great, easy to use
Reviewed in the United States on July 6, 2025 by Amazon Customer
Style: Plumbing Fixture
Everything fit and it working perfectly, Zero Leakby
Reviewed in the United States on June 28, 2025 by Mitch Romine