CMP 1.5" Insider Dir Flow Wall Return Fitting [White] (25554-400-000) air switch and this Poolvergnuegen version uses

and this Poolvergnuegen version uses the 896584000-501 reference

heating and water-movement functions can become inconsistent across the spa

Reduces risk of damaging surrounding jet components

Replacing the volute is often a smart repair when the goal is to restore water-side performance without discarding the rest of the assembly unnecessarily

but they often play a major role in whether the wiring layout feels organized and serviceable

CMP 1.5" Insider Dir Flow Wall Return Fitting [White] (25554-400-000) air switch and this Poolvergnuegen version usesThe CMP Insider directional flow wall return fitting is designed for compatible pool return applications where a 1. 5 inch replacement fitting is needed. A wall return fitting is useful because it helps direct returning water into the pool, supporting circulation performance and the intended finish at the return point. This replacement is especially useful when the original fitting is cracked, faded, damaged, or no longer directing flow correctly.