Anon11/15/25, 19:03No.2957811
Looks like a standard riser. I've replaced many of those over the years. You can find them at any decent hardware store, including just replacing the float and arm if you want.Or you can replace the whole unit with a Fluidmaster kit. It's the tall piece on the left in this pic. Has a black float. You can adjust the height to match how much water you want in the tank. It usually costs a bit more but is a decent quality kit.