Hayward Universal H350FD Negative Pressure Indoor Vent Adapter (UHXNEGVT13501) plugs A complete wet-end replacement is

A complete wet-end replacement is especially useful when the motor remains serviceable and the goal is to refresh the water-handling side of the pump with a more complete repair

Supports mixed-size connections

and this Jacuzzi Cygnet 0

The 8 AWG sizing gives this terminal practical value because stud-mounted connections work best when the terminal matches both the conductor size and the attachment hardware

and help protect the surrounding surfaces from the kind of wear that often comes from using general-purpose tools in tight spaces

Hayward Universal H350FD Negative Pressure Indoor Vent Adapter (UHXNEGVT13501) plugs A complete wet-end replacement isThe Hayward indoor vent adapter is designed for compatible Universal H350FD heater applications where a negative pressure indoor vent setup needs the proper transition fitting. An adapter like this is useful because it helps establish a more complete connection between the heater and the venting system for indoor installations. This replacement is especially useful when the original adapter is missing, damaged, corroded, or no longer appropriate for