Details: Enhance your toilet’s overall performance in one proven Fluidmaster kit. The Fluidmaster 400CR Toilet Fill Valve and Toilet Flapper Repair Kit is a complete fill and flush toilet repair kit that includes both the trusted Fluidmaster 400A toilet fill valve and the durable Fluidmaster 501 2” flapper. Perfect for a DIY upgrade with its fast and easy installation and a 5-year warranty. A replacement toilet kit that solves most common toilet fill problems, with the included 400A toilet fill valve anti-siphon design. While the reliable 501 2” flapper helps prevent leaks, featuring a solid frame build, and corrosion resistant materials. For an even more optimized performance consider combining with a Fluidmaster automatic toilet bowl cleaner. A universal design fitting most 2” flush valve toilets, best with 3.5+ GPF and works with 1.6 GPF toilets. The Fluidmaster 400CR Toilet Fill Valve and 2” Toilet Flapper Repair Kit is the #1 solution to fix noisy and running toilets.