Hayward Super Pump/Super II 0.75-2.0 HP Diffuser (SPX2600B) vacuumrelease A part like this is

A part like this is useful because it helps introduce ozone-related air flow into the system while preserving the original three-port barb-style configuration

Quantity of 2 supports matched replacement

OEM Pentair ST80DE grid

Because many spa heater assemblies look similar

Hayward Super Pump/Super II 0.75-2.0 HP Diffuser (SPX2600B) vacuumrelease A part like this isThe Hayward diffuser is designed for compatible Super Pump and Super II applications in the 0. 75 HP to 2. 0 HP range where the internal flow directing component needs replacement. A diffuser like this is useful because it helps manage water leaving the impeller, supporting hydraulic efficiency and smoother pump operation. This replacement is especially useful when the original diffuser is cracked, worn, distorted, or damaged by debris or impeller