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Fluidmaster

Fluidmaster 703AP4 Specialty Toilet Fill Valve for Glacier Bay and Niagara Conservation Flapperless Toilets

  • Based on 5,903 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Jun 16
Order within 13 hours and 46 minutes
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Color: No Finish


Size: 1 Pack


Pattern Name: Valve


Features

  • A direct replacement for Glacier Bay & Niagara Flapperless Toilets
  • Easy-to-install, instructions included
  • Increase your Glacier Bay / Niagara refill speed
  • Restore & optimize your toilet to factory performance
  • Replace old or inefficient fill valves with this high-quality replacement part
  • A fast and effective DIY solution to common toilet fill problems

Description

Fluidmaster is the number 1 toilet parts brand in the world, selling more than 100 million toilet products annually and selling more toilet-tank replacement parts than any other manufacturer in the world. 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: Plastic


Brand: Fluidmaster


Item dimensions L x W x H: 2.38 x 2.38 x 8.38 inches


Exterior Finish: Plastic


Inlet Connection Size: 0.75 Inches


Inlet Connection Type: Barb


Outlet Connection Type: Barb


Outlet Connection Size: 0.75 Inches


Global Trade Identification Number: 48


Unit Count: 1.0 Count


Exterior Finish: Plastic


Inlet Connection Type: Barb


Outlet Connection Type: Barb


Connector Type: Barb


Thread Size: 0.75 inches


Valve Type: Float Valve


Item Dimensions: 2.38 x 2.38 x 8.38 inches


Inlet Connection Size: 0.75 Inches


Outlet Connection Size: 0.75 Inches


Size: 1 Pack


Item Weight: 3.2 ounces


Material Type: Plastic


Brand Name: Fluidmaster


Model Number: 703A


Global Trade Identification Number: 48


Manufacturer: Fluidmaster


Manufacturer Warranty Description: Warranty


UPC: 796716399315 039961371348


Manufacturer Part Number: 703AP4


Item Type Name: toilet-replacement-parts


Unit Count: 1.0 Count


Included Components: Product Only


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 16

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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Great product
Color: No Finish Size: 1 Pack Pattern Name: Valve
Easy to install and works great 👍
Reviewed in the United States on May 28, 2026 by Christina mimbs
    • Flapperless - The greatest thing since toilet paper...With one HUGE caveat!
Color: No Finish Size: 1 Pack Pattern Name: Valve
There is no doubt that the flapperless dump bucket toilets are far superior to the flappers as they provide a stronger flush with less water. However, when they start leaking they make almost no noise...I had to pull the tank cover to hear the very faint hissing and see the spill bucket was full to the rim & spilling over into the tank/bowl very slightly. The hissing was inaudible with the cover on & the leakage was slow enough not to present itself in the bowl...where it did show up was on my water bill which was triple the normal amount. So yes, the flapperlesss toilets are much better but you need to keep a close ear/eye on them & pull the cover periodically to inspect for leaks. The flappers are noisy when they are leaking & often just jiggling the handle shuts them off. The valve that this one replaced was only about 5 years old but the seal/metering pin are subject to wear & degradation...don't find this out the expensive way! The valve is super easy to replace (make sure to flush the line out first if you turned the water off at the wall) & don't forget to swap the little white round restrictor orifice from the old one to the new one. If any adjustment is necessary just turn the thumb screw on the float, no tools are required for the job. PS: My city water company is great & has promised to adjust my bill so it's worth a call if it happens to you. ... show more
Reviewed in the United States on September 8, 2025 by halonut
    • Works like a charm!
Color: No Finish Size: 1 Pack Pattern Name: Valve
OK, I'm a first time home buyer, been a month in the house and the 6-year old started screaming toilet broke. I wasn't happy as I'm a complete idiot when it comes to home maintenance (i'm learning, but its a steep curve for me). So I was somewhat shocked when I lifted the toilet lid off to see what was inside (really who does that?) Both the wife and I looked at each other and said what the heck is this? So googled the model and found out what kind of toilet and valves work. Found the product here on AMZN. Ordered it, just arrived a few minutes ago. Opened the box (complete intact, not damaged), and yup, same product. So, I went over to the toilet, removed old fluidmaster and replace with my shiny new one. To my surprise. IT WORKED! and it took me as long as to unscrew the old one, toss it into the bin, and screw in the new one. Did 5 flush tests, adjusted water flow to a nice fill rate (who wants slow? If you gotta go, you gotta go!), and I am happy. I can check this off my man card and say yes, I fixed the toilet. I'll be buying another fluidmaster next month to keep as a backup, since I have 2 toilets with this device and I ALWAYS want a spare on hand. My suggestion, find out how many you have, and purchase an extra throw on the shelf, so when it breaks down, your good to go. Thank you, product is excellent, works, easy to install. No tools needed. Lift toilet lid, unscrew old fluidmaster, screw in new fluid master, adjust water flow and place lid back on toilet. GOOD TO GO. This was an excellent experience all around, so 5 stars from me. Remember, I'm a home-owner idiot! So it was easy and simple. When I say anyone can do this, I mean ANYONE CAN DO THIS, heck, a child can do this. next time, the 6 year old will be utilized, give him some basic skills! :) ... show more
Reviewed in the United States on June 8, 2019 by Thomas Roy Garner
    • Convenient shopping for this on Amazon.
Color: No Finish Size: 1 Pack Pattern Name: Valve
We knew what we were ordering in this product and therefore, have had no problem as it's an exact replacement. Working fine.
Reviewed in the United States on March 26, 2026 by Carol Raynor
    • Works well, but failed at 1 year
Color: No Finish Size: 1 Pack Pattern Name: Valve
It fits perfectly, and works perfectly, but doesn't hold up well. It's easy to install, and doesn't leak, but the one we bought almost exactly a year ago, was failing. We did replace it with the same unit - it's price is good - but it should last more than a year.
Reviewed in the United States on June 5, 2025 by SeG
    • Way to install!
Color: No Finish Size: 1 Pack Pattern Name: Valve
This product was perfect for our toilet tank. We just unscrewed the old one and installed the new one and whala! Easy to install, sealed and adjusted perfectly! Wonderful material and product. Very satisfied!
Reviewed in the United States on April 13, 2026 by Leticia m.
    • Perfect
Color: No Finish Size: 1 Pack Pattern Name: Valve
So the flipper valve on our toilet decided to stop working today. The water is very hard where we live and it appears the flipper valve calcified over time. I was able to find a YouTube video demonstrating the same issue and how to install a new one. It was very simple to install and worked for our toilet. Not only was the piece perfect but it was also priced well and Amazon was able to deliver the part the same day ♡ ... show more
Reviewed in the United States on August 6, 2025 by Bookworm
    • Super easy and quick!
Color: No Finish Size: 1 Pack Pattern Name: Valve
This now a perfect fit to replace the previous model number 703A5B fluidmaster. Just remember the remove the small white regulator from the old one, this model does not come with it. When your remove the old one, tilt it back to look inside the threaded portion and you will see it. I used a small screwdriver to remove it. ... show more
Reviewed in the United States on November 13, 2025 by Rob

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