The TOTO Replacement Flapper is designed for use on a selection of TOTO 3 inch flush valve tanks. Adjustable for various tanks, replacing flapper part numbers THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, THU369S, and THU499S. Polypropylene body with rubber sealing surface. Flapper includes chain along with instructions for set-up specific to TOTO tank model.
This the real Toto flapper, and it works. So many hardware stores carry imitations and they don't fit , don't flush properly, and leak. Don't buy the knock-offs.. David. Novato, CA. Sat Aug 16 2025