Fluidmaster 400CRP14 Adjustable Toilet Tank Repair Kit. It includes #400A Fill Valve & The Rugged #501 Dura-Flush Flapper. The flapper is chlorine resistant for harsh water regions. This kit solves the 2 most common toilet problems: noisy and running toilets. It is easy to install and fits 3.5 gpf toilets or larger made prior to 1994. Backed by a 1 year warranty.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov