Kohler Part GP1039444 Flapper for ONE-Piece Toilets with Class Five Technology, 3-1/4 in, Red Protect the warranty on KOHLER products, always look for the KOHLER GENUINE PARTS logo For One-Piece toilets with 3 1/4" flappers Corrosion resistant Compatible with the following KOHLER models: Cimarron 3489, 3802, 11889, Memoirs 3451, 3453