Jacuzzi has completely redesigned the diverter gate from top-to-bottom.
The new gate design (#6540-568) adds a retention ridge with
a single o-ring (6540-868) at the top to prevent twisting and
misalignment inside the cap. It also adds a new slotted orbital plate
and perimeter o-ring (6540-550) that adds friction to prevent unwanted
Retrofit Tip: The new diverter gate can retrofit any diverter using the old-style gate (6540-966). Simply order the new gate (6540-568), top o-ring (6540-868), and orbital plate o-ring (6540-550) to use as replacements