Jacuzzi/Sundance 2005+ Magnetic Check Valve (6541-386) cgairsystems A part like this is

A part like this is useful because it restores the core body of the jet assembly while preserving the intended tee-style plumbing layout behind the finished surface

and Filter functions using the 9916-100723 reference

Supports more dependable and predictable operation

4 amp specification

The gray 5-scallop design gives this Waterway part a more decorative finish than a plain smooth insert

Jacuzzi/Sundance 2005+ Magnetic Check Valve (6541-386) cgairsystems A part like this isA check valve helps allow flow in one direction while preventing unwanted backflow in a compatible plumbing system, and this Jacuzzi and Sundance version is a magnetic check valve for 2005 and newer applications using the 6541 386 reference. Check valves are useful because they help protect proper flow direction and support more predictable equipment operation. This part has practical value because the application specific 2005+ compatibility helps