Toilet Flush Valves

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K-507A-008 Universal 2-in. Adjustable Toilet Flush Valve Repair Kit

  • Fix your leaky tank and restore flush performance with this adjustable flush valve repair kit
  • Easy to install, universal design fits 2 in. flush valve toilets
  • Adjustable- flush valve height adjusts with a twist to fit more tanks
  • PerforMAX Water-Saving Toilet Flapper included to save water use per flush
  • Universal tank-to-bowl gasket system included, for use with Kohler, Gerber and most any 2 in. flush valve toilet
  • Helpful install/uninstall tool provided for the easiest installation experience
  • Chlorine and hard water resistant flapper for a long lifespan
  • Durable, stainless steel hardware built to last
  • 5-year warranty

Best for use in 1.28 and 1.6 GPF toilets (can use with older 3.5 GPF models)

To download our free guide to fix common toilet problems please click here: Fluidmaster Toilet Repair Guide

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The Fluidmaster K-507A-008 Universal 2 in. Adjustable Flush Valve Repair Kit includes everything needed to restore your toilet’s flush. Quickly eliminate leaks at a common leak point, between the tank and bowl. From purchase to installation, this helpful toilet repair kit offers the simplest repair experience possible, showcasing step-by-step instructions and durable install/uninstall tools to eliminate searching for toilet repair tools. This universal design is built to work with most 2 in. flush valve toilets. The flush valve features an adjustable overflow tube, simply twist to adjust height for any toilet tank. Stop water waste and control your water use per flush with the solid frame PerforMAX Adjustable Flapper. This kit also includes the innovative universal tank-to-bowl gasket system that fits any 2 in. flush valve. Use the red gasket for standard designs, the black triangle gasket for Kohler models and combine to fit Gerber models. Eliminate leaks and save water with this durable and easy to use 2 in. toilet flush valve Kit.
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Here is the installation video:

K-507A-008 Universal 2-in. Adjustable Toilet Flush Valve Repair Kit

Download Installation Instructions

Frequently Asked Questions


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The K-507A-008 Universal 2-in. Adjustable Toilet Flush Valve Repair Kit is available online, from our following retail partners.