Model # 507AK

Internet #100118713

Fluidmaster Toilet Flush Valve Kit

Discontinued Fluidmaster

Toilet Flush Valve Kit

Frequently Bought Together

Product Overview

The Fluidmaster Tank Flush Valve Kit has everything you need to replace the flush valve and flapper, tank-to-bowl bolts and tank-to-bowl gasket and even customize your gallons per flush. Corrosion and chlorine resistant materials used for long wear.

  • Plastic, rubber and PVC material
  • Replaces worn flush valve, flapper/tank ball unit, tank-to-bowl bolts and gasket
  • Bull's eye adjust-a-flush chlorine-resistant flapper lets you customize flush volume
  • Corrosion-resistant materials for added durability
  • Note: Product may vary by store.

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

will this work on a Briggs 4400 series toilet?

Asked by: Anonymous
The 507AK flush valve will work in the Vacuity model (Briggs 4400) toilet tank along with the other connecting parts. The 4400 Briggs tank has a standard 2 inch cut out to allow the flush valve to fit properly through the tank.The kit comes with an adjustable flapper that can be readjusted in order to time the flush.
Answered by: FluidmasterSupport
Date published: 2015-09-17

I have a 1.28 flush valve now, i want more of a flush to make sure all is flushed. Will this valve give me what i need to get more of a flush.

Asked by: Anonymous
Most 1.28 Gallon Per Flush toilets are equipped with 3" flush valves. The 507 series flush valve is made for toilets that use 2" flush valves. Please verify that your flush valve opening is indead 2" in diameter. If a 3" flush valve is needed, please see Fluidmaster's 540AKR 3" Flush Valve. Both the 507AKR and the 540AKR come with adjustable flappers so that you can achieve the ideal flush.
Answered by: FluidmasterSupport
Date published: 2015-09-17

Will this fit Murray series of Elger?

Asked by: Anonymous
The 507AK will replace a free standing overflow pipe inside a traditional two piece toilet. As long as your tank is not mounted on the wall or have a built in china overflow pipe, the 507AK should work very nicely with your model toilet.
Answered by: FluidmasterSupport
Date published: 2015-09-17

Will this fit an Anmerican Standard toilet with a 3 1/2 " daimeter hole in tank?

Asked by: Anonymous
The 507 Series Flush Valve is only intended for 2-piece toilet with 2" flush valve openings. If your toilet has a 3" flush valve, please see the 540AKR 3" Universal Flush Valve Kit. The 540AKR will fit most 2-piece toilets with 3" flush valves including, Toto, Jacuzzi and American Standard. It will not fit the American Standard Champion, Champion 4 or Kohler toilets. Please contact the original equipment manufacturer for the flush valve used in these toilets.
Answered by: FluidmasterSupport
Date published: 2015-09-17
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Customer Reviews

Toilet Flush Valve Kit is rated 4.0 out of 5 by 7.
Rated 3 out of 5 by from I have to replace every two years. Five year defect warranty? I think not. More like two. Product is super easy to install. I didn't use the flapper as I have an aftermarket dual flush valve. Only real problem is that on two flush valves (of the three installed so far) a crack develops at the bottom of the overflow tube. Made two of my toilets cycle to fill frequently. Only one readily available in stores that is sold individually. Advice to the manufacturer would be to use a thicker gauge of plastic or don't make returning product such a hassle (have to send back to manufacturer).
Date published: 2013-03-28
Rated 4 out of 5 by from Works Great; Easy Install Product was very simple to install and works great.
Date published: 2013-02-12
Rated 1 out of 5 by from Poor quality Needed to replace one in a different toilet couldn't find the brand from last year so had to get this one. Waste of money. Cheap and thin plastic doesn't seal well and leaked at the mold seam got another one, same issue really disappointed.
Date published: 2013-04-02
Rated 5 out of 5 by from Easy to install The part was easy to install. The new adjuster makes it easier to adjust the tank water level than older versions.
Date published: 2012-06-06
Rated 5 out of 5 by from Overall - easy to install - great product I bought this kit , read instructions to make sure I was doing it right and it worked the first time!
Date published: 2012-09-19
Rated 5 out of 5 by from Easy Very easy to install..took me 15 minutes. I've had no problems since.
Date published: 2012-03-18
Date published: 2012-02-08
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