Hayward C-Spa XI Thermostat Knob Black (CZXTSK2003) calvertengineering supporting more reliable operation and

supporting more reliable operation and stronger assembly integrity

A focused kit like this is especially useful when the valve body remains serviceable and the weakness is clearly concentrated in the lid area

or no longer holding position properly

Includes venturi air bleeder and O-ring

Helps form the wet-end housing and discharge pathway

Hayward C-Spa XI Thermostat Knob Black (CZXTSK2003) calvertengineering supporting more reliable operation andThis black thermostat knob is a replacement control part for compatible Hayward C Spa XI heater applications. A damaged or missing knob can make temperature adjustment difficult and reduce usability at the equipment pad. Replacing it gives the control panel a cleaner, more functional feel during routine operation. Replacement thermostat knob for compatible C Spa XI heaters Helps restore manual temperature adjustment Black finish for matching control