Search  for anything...
Fluidmaster

Fluidmaster 5403 Universal 3-Inch Toilet Flapper, Water Saving | Silicone seal lasts up to 10X longer, Adjustable dial saves water, Kink-free chain, Resists chlorine and hard water

  • Based on 7,395 reviews
Condition: New
Checking for the best price...
$16.89 Why this price?

Buy Now, Pay Later

As low as $4 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Aug 26
Order within 5 hours and 27 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 3 Inch


Style: Toilet Flapper


Features

  • LONG-LASTING DURABILITY: Toilet flapper with solid frame and kink-free chain replaces leaky, corroded flappers, preventing twisting, ghost flushing, and running toilet problems
  • UNIVERSAL DESIGN: Adjustable flapper fits most 3-inch flush valve toilets, best for use in high efficiency 1.28 to 1.6 gallons per flush toilets, includes adjustable length kink-free chain
  • ADJUSTABLE TO SAVE WATER: Dial flapper adjusts for maximum flush efficiency and to save water
  • SILICONE SEAL: Durable silicone seal lasts 10X longer than regular flappers and resists chlorine and hard water
  • 10-YEAR WARRANTY: This product has a 10-year warranty

Description

Fluidmaster 5403 3-Inch Universal Water Saving Long Life Toilet Flapper 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.

Material: Rubber


Brand: Fluidmaster


Item dimensions L x W x H: 5.25 x 9 x 3.25 inches


Exterior Finish: Red


Inlet Connection Size: 3 inches


Inlet Connection Type: 3-inch flush valve


Outlet Connection Type: 3-inch flush valve


Number of Ports: 2


Outlet Connection Size: 3 inches


Number of Packs: 1


Exterior Finish: Red


Inlet Connection Type: 3-inch flush valve


Outlet Connection Type: 3-inch flush valve


Number of Ports: 2


Thread Size: 3 inches


Thread Type: 3 inches


Connector Type: Socket


Valve Type: standard


Item Dimensions: 5.25 x 9 x 3.25 inches


Inlet Connection Size: 3 inches


Outlet Connection Size: 3 inches


Size: 3 Inch


Material Type: Rubber


Brand Name: Fluidmaster


Model Number: 5403P4


Global Trade Identification Number: 33


Unit Count: 1 Count


Manufacturer: Fluidmaster


Manufacturer Warranty Description: Lifetime


UPC: 039961015433


Included Components: Fluidmaster 5403 3-Inch Universal Water Saving Long Life Toilet Flapper


Item Type Name: Fluidmaster 5403 3-Inch Universal Water Saving Long Life Toilet Flapper


Number of Pieces: 1


Set Name: Toilet Valve Set


Manufacturer Part Number: 5403


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Amazing part - great customer services
Size: 3 Inch Style: Toilet Flapper
11/10 customer service. I bought a Fluidmaster 5403 3-Inch flapper in November 2021. In March 2026 4 1/2 years later it had developed a small blister on its O-ring and would not seal correctly. Typical wear I assumed. As I was ordering another one I saw it had a ten year warranty. After ordering the new one I went to the Fluidmaster web page and found the warranty information. I filled in and sent the warranty form and 45 minutes later I got an email with a FedEx tracking number saying a replacement part was on its way. The new part got here in 3 days. This flapper fits perfectly - took on a minute to install - and works great. Not only is this a great part that does the job the customer services was bonkers good. From now own Fluidmaster will be used for all my toilet needs. The people at Fluidmaster shall sit amongst the chosen. ... show more
Reviewed in the United States on March 24, 2026 by Chris Walken
    • Toilet Flapper that Fixed the Issue Right Away
Size: 3 Inch Style: Toilet Flapper
I bought this because a couple of toilets were constantly running, and this fixed the problem immediately. Installation was pretty simple, just a few adjustments and it was done. Pros: • solved running toilet issue • straightforward installation • good seal once installed • has held up well for a couple of months • 10-year warranty adds peace of mind • great value for money pack • great replacemnt Cons: • no major negatives so far This ended up being a simple but very effective fix. No issues since installing it. ... show more
Reviewed in the United States on April 14, 2026 by The Review Desk
    • Perfect
Size: 3 Inch Style: Toilet Flapper
The Fluidmaster 5403 3-Inch Toilet Flapper works excellent. Easy to install and fixed my leaking toilet.
Reviewed in the United States on June 15, 2026 by Tom Duncan
    • Seems great but didn't fit universally
Size: 3 Inch Style: Toilet Flapper
This was not universal in terms of latching. I’m. Ot sure if that was my fault, so I’ll settle on saying it seems like it will work great if you know how to use it and just know toilets apparently vary in stupid ways. So double check. Honestly I think this taught be it was not the flapper causing the running, but it was a solid try from an uninformed person taking the term universal as I think we generally would. I didn’t even know there was a difference in the flapper connection vs the size of the plug. That I really thought was universal. I accept my failure and momentary defeat lol Not going to return this, because it works fine and seems great quality. I only give 4 stars due to the marketing of universal not seemingly being 100 percent accurate and that was why I ordered a more expensive version of other cheaper ones. ... show more
Reviewed in the United States on July 12, 2025 by Dr. Swanson
    • Better than expected - a TRUE water saver
Size: 3 Inch Style: Toilet Flapper
After just a few days use, i am compelled to write a review on this product. 1. It is well made and look and feels high quality 2. The detented adjustments allow a wide array fitment, and the detent positions hold very well 3. The flapper is adjustable for the length of time the flapper stays open.. which is nice 4. Easy installation... almost too easy Now... the primary reason for my review is the following 5. The longest "flap open" setting of 10, leaves about 3 nches of water in the bowl, which made me concerned.. as this was the longest the flap could stay up ( 10 was Max) BUT 6. I watched the actual bowl flush and it was a complete, full length flush.. 7. I confirmed this by leaving the tank cover off for three days, and the tank would have about 3 inches of water BUT still allowed a complete flush This is a real water saver, as the flapper it replaced would drain down to about an inch.. I was concerned that the flapper was closing too quickly to allow a full flush BUT it does allow a full flush Great product ... show more
Reviewed in the United States on April 18, 2026 by KMac
    • Easy to replace
Size: 3 Inch Style: Toilet Flapper
Greag product and very easy to use. Ive never changed one before and the instructions and ease of use were very self-explanatory. Really like how you can change the water flow on it (or w.e it is). Would recommend if you have 0 experience like me.
Reviewed in the United States on July 1, 2026 by Amazon Customer
    • Easy to install but may loosen over a short period of time
Size: 3 Inch Style: Toilet Flapper
Installation was simple and it worked great initially. After about a year, the hook tends to loosen and fall out of the pole it attaches to, which can prevent the flap from closing properly. This happened on all my bathrooms around the same time, so be aware it might not last long-term.
Reviewed in the United States on November 13, 2025 by Ray L
    • Great Product as advertised !
Size: 3 Inch Style: Toilet Flapper
Great Product works well with Vortens toilets !
Reviewed in the United States on June 14, 2026 by D

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...