More delivery methods in checkout
Return this item within 7 days of purchase.
Get an immediate answer with AI
AI-generated from the text of manufacturer documentation. To verify or get additional information, please contact customer service.
If you’ve got a Niagara flapperless toilet or a Glacier Bay, the Fluidmaster 703AP4 is the fill valve you need.

This valve comes preset with the right refill rate, so your toilet gets the correct amount of water every flush – no more weak flushes or running water.


Installation is a breeze – even if you’re not a plumber.
The kit includes simple, step-by-step instructions, and you can swap it out in maybe 15 minutes.
![]()

Bottom line: if your Niagara or Glacier Bay toilet is acting up and you suspect the fill valve, this is your fix.
Affordable, reliable, and easy – exactly what a DIYer wants.
![]()

4.9 out of 5