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Fluidmaster 400AKR Universal All in One Toilet Repair Kit for 2-Inch Flush Valves, Easy Install

4.5 4.5 out of 5 stars 7,017 ratings

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Brand Fluidmaster
Material Plastic, Rubber
Fit Type Universal
Item Dimensions LxWxH 4.3 x 7.4 x 13.9 inches
Exterior Finish Brass

About this item

  • RESTORES OVERALL TOILET PERFORMANCE: All in one toilet repair kit replaces inefficient fill and flush valves, leaky flappers, and broken toilet handles to make your toilet run like new
  • UNIVERSAL DESIGN: 400A toilet fill valve adjusts easily from 9 – 14 inches, fits most 2-inch flush valve toilets, and is ideal for use in 1.6 to 3.5 gallons per flush toilets or larger
  • HIGH PERFORMANCE FLAPPER: PerforMAX high performance 2-inch adjustable water-saving toilet flapper maximizes water usage with each flush
  • EASY INSTALLATION: Easily installs in 10 minutes or less to get your toilet flushing like new again
  • 5-YEAR WARRANTY: This product has a 5 year warranty
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Customer ratings by feature

Easy to use
4.5 4.5
Easy to install
4.3 4.3
Instruction quality
4.3 4.3
Value for money
4.2 4.2

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Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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Fluidmaster

Fluidmaster 400AKR Universal All in One Toilet Repair Kit for 2-Inch Flush Valves, Easy Install


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Product Description

Product Description

Designed with overall performance in mind, the Fluidmaster 400AKR Universal All in One Toilet Tank Repair Kit features everything you need to make your toilet run like new. The trusted and proven 400A toilet fill valve ensures a quiet and proper fill, while the PerforMAX 2-inch water-saving flapper adjusts to maximize water usage with each flush. A complete toilet repair kit, it also includes a replacement toilet flush valve, toilet handle, and tank-to-bowl gasket, solving various leaking and common toilet problems. Perfect for a DIY upgrade with its fast and easy installation, the universal design fits most 2-inch flush valve toilets and works best with 1.6 to 3.5 gallons per flush toilets or larger to help solve most common toilet fill problems. Only trusted, durable, and code approved toilet replacement parts in this kit, designed to restore and fix overall toilet performance. The Fluidmaster 400AKR All in One Toilet Repair Kit comes with a 5-year warranty.

From the Manufacturer

Fluidmaster is the #1 toilet repair brand in the world. Since 1957, we have been guiding our customers to the right toilet repair solutions. Fluidmaster is dedicated to making the installation of its products easy and simple with a complete line of toilet repair parts including: fill valves, single and dual flush valves, flappers, tank levers, toilet seals (bowl wax and wax-free), toilet repair kits, flush valve seals, connectors and more. Fluidmaster parts are found in more toilets than all other brands combined. Fluidmaster distributes to over 90 countries and is the trusted brand by toilet manufacturers and professionals worldwide.

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
7,017 global ratings

Customers say

Customers like the ease of installation, performance, quality and value of the motor engine fuel tank. They mention that the installation instructions are really good, the directions are simple and easy to follow and that the product works well. Some are happy with flushing. That said, opinions are mixed on leakage, completeness, and fit.

AI-generated from the text of customer reviews

485 customers mention447 positive38 negative

Customers find the installation instructions for the motor engine fuel tank to be good, simple, and easy to follow. They also mention that the instructions come with DIY instructions that are thorough, clear, and written in easy-to-understand language.

"...The instructions are very thorough, clear and written in easy-to-understand language (in Spanish too). That isn’t true of some other brands...." Read more

"...It comes with detailed instruction and all the parts you need. Most importantly, they are well built.2. Great engineering design..." Read more

"This is a solid, well-performing product. Installation is moderately easy, and there is a great deal of satisfaction in being able to totally '..." Read more

"...The directions are mostly good, but the first install took me 3 hours of swearing...." Read more

396 customers mention341 positive55 negative

Customers like the performance of the motor engine fuel tank. For example, they say it works well, it worked perfectly on a 35 year old toilet, and the soaking technique worked great. Customers are also satisfied with the ease of use and the information provided in the manual.

"...After installation, my toilet worked perfectly, even better than a new toilet since it is an older model which uses more water than the new..." Read more

"...Installation is moderately easy, and there is a great deal of satisfaction in being able to totally 'renovate' your old toilet in an hour...." Read more

"...Does its job well.Some install tips I learned (for newbs):1...." Read more

"Works great" Read more

327 customers mention235 positive92 negative

Customers like the quality of the motor engine fuel tank. They say it has very fine hardware and adjustable features. They also say it's well built, excellent, and universal. Customers also appreciate the well thought out and designed product.

"...Most importantly, they are well built.2. Great engineering designI am pretty impressed by some of its designs...." Read more

"...Had it for about 6 weeks now, and it's flawless so far and appears well-made enough to last a long time...." Read more

"...that the plastic tube on my flush valve had become brittle and cracked and was leaking, and the flush valve gasket (between the tank and toilet) had..." Read more

"...But you need the right tools and patience. Product seems to be well made." Read more

147 customers mention128 positive19 negative

Customers like the value of the motor engine fuel tank. They say it's well made and good value for the money.

"...I rated 5 stars for this product. I think it's well worth the price. But I do think there are some rooms for improvement.1...." Read more

"...Great deal for the money: sure beats either hiring a plumber to 'renovate' or replace your toilet and anyone with a modicum of patience and a few..." Read more

"...Not so fast!!This setup is reasonably priced, but it is NOT an Easy DIY job! You have to remove the entire tank to install it!..." Read more

"...have used it for replacement several times back, consistent quality, good value." Read more

51 customers mention43 positive8 negative

Customers like the flushing of the motor engine fuel tank. They say that it works perfectly and smoothly. Some mention that the kits are easy to install and that the flush is adequate for the job. Overall, most are satisfied with the product and recommend it to others.

"...that the flow level is adjustable so now there's a good flush that doesn't leave anything behind...." Read more

"Oh boy, this is a good product and my toilet is doing very well now (been about 6 weeks since I rebuilt it with this kit)...." Read more

"...hours, but the constant running seems to have died down, & it flushes better now...." Read more

"...There were even a couple of extra washers. The install process is straightforward with good diagrams to help those of us who are plumbing-challenged...." Read more

156 customers mention61 positive95 negative

Customers are mixed about the leakage of the motor engine fuel tank. Some mention that it works like new with no leaks, while others say that it brittle and cracked. The seal for the fill valve leaked like crazy in their install, and there was a small trickle coming from the top of the valve assembly.

"...plastic tube on my flush valve had become brittle and cracked and was leaking, and the flush valve gasket (between the tank and toilet) had turned..." Read more

"...Quieter than the builder special systems, no leaks, and no continuous running. Does its job well...." Read more

"...and sometimes it will block the flush valve opening so water keeps leaking to the toilet bowl...." Read more

"...PLENTY OF ROOM FOR THAT BOLT BETWEEN . THIS SEALS THE FLANGE GASKET REALLY GOOD AND PROPER. THEN TIGHTEN THE BRASS SCREWS DOWN...." Read more

140 customers mention68 positive72 negative

Customers are mixed about the completeness of the motor engine fuel tank. Some mention that it's complete with all needed parts and easy to install, while others say that it lacks the third bolt and a bunch of fasteners.

"...Good kit and everything works really well...." Read more

"...The kit only comes with 2 tank bolts, but my Mansfield toilet has 3 bolt holes. The kit actually includes extra rubber washers for 3 bolt toilets...." Read more

"Lots of components and clear instructions. - also explains what to do if the things you’re replacing may not be an exact match...." Read more

"...Deduct one for omitting essential items, and another one for failure to acknowledge their absence on the packaging and in the specs where customers..." Read more

103 customers mention47 positive56 negative

Customers are mixed about the fit of the motor engine fuel tank. Some mention that everything fit fine, while others say that it didn't fit their toilet. It's easy to adjust and works well. However, some customers have reported that the outflow gasket was too tall.

"...the brass screws that hold the tank to the top of the bowl are really too small.. only about 3/8 of a screw head versus almost 3/4 of and inch..." Read more

"...I can tell you that this fits AS 4392 tank perfectly. It took me about two hours to do everything (incl. draining, cleaning etc.),..." Read more

"...The rubber washer/gaskets from the new bolts will not fit tightly onto the old ones (hole is too large of course) and will not seal, allowing water..." Read more

"Kit worked well everything fit very well for my old toilet, I got a small trickle of water when..." Read more

Time saving tip - you may need a third 5/16 bolt and washer set
4 Stars
Time saving tip - you may need a third 5/16 bolt and washer set
This kit worked fine for my Mansfield toilet (dated 2004). Their were numerous other numbers on the toilet so I'm not sure of the model.Best tips- #1 If your tank has 3 bolts connecting the tank to the basin, you will need to purchase another bolt because the kit comes with only 2. Do NOT reuse your existing bolt if it has the washer/rubber attached to it. I would just run down to L's and get another bolt. A photo of what I bought is attached. It's a 5/16 bolt to match what is in the kit. HD did not have any bolts in stock.#2 tip - You'll need the large wrench in my photo to remove the existing large white nut (also in photo). I had to soak my tank in a tub of hot water for 30 minutes to help loosen it. The wrench only needs to catch a corner of the nut to make it work. I spent too long trying to actually grab it. This is the step that will make you think you can't do it. Play with wrench position, remembering that in my opinion, it is not supposed to actually wrap around the nut. It just needs to catch a corner of it long enough to make a couple of turns to loosen it.#3 I used the green rubber shelf liner to help grab several parts.#4 You will probably need to cut the fill tank down to ONE inch below the fill line (which you can see inside the tank). Easy to do with any saw, but just do it before you reattach the tank.I'm a 61 year old female with no plumbing skills and I was able to replace all my tank parts and eventually tighten the bolts without any leaks all by myself. It's not technically difficult but takes some strength, tools, patience and a good youtube video. Hopefully my tips will help someone else complete the task in just a couple of hours instead of the 5 it took me.possible model numbers were Mansfield 63, 160, 135, 171, 272
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Top reviews from the United States

Reviewed in the United States on February 27, 2022
4 people found this helpful
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Reviewed in the United States on December 25, 2020
11 people found this helpful
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Reviewed in the United States on January 17, 2017
14 people found this helpful
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Top reviews from other countries

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SFranks
5.0 out of 5 stars Easy fitting.
Reviewed in Canada on January 29, 2024
JOSE FORTUNATO VARGAS CHAIREZ
5.0 out of 5 stars Es de buena calidad
Reviewed in Mexico on October 3, 2021
L STANTON
1.0 out of 5 stars One Star
Reviewed in the United Kingdom on December 27, 2014
3 people found this helpful
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Chesternator
5.0 out of 5 stars Solucionó el problema
Reviewed in Mexico on February 12, 2021
DJ C
5.0 out of 5 stars Easy fix for my toilet - A 60 year old toilet.
Reviewed in Canada on January 20, 2014
2 people found this helpful
Report