Marketing InformationFor use in Kohler® one-piece model toilets with 2 in flush valves. The 5084 Flapper is designed to be a direct replacement flapper for Kohler® Rialto toilets as well as other models that will quickly restore performance to your toilet's flush. This flapper is easy to install. To determine fit see model number details on the inside back wall of your toilet's tank. Upgrade your faulty flapper with a replacement designed to restore flush performance, from the number one toilet repair brand worldwide.