Hayward C-Spa XI Thermostat Knob Black (CZXTSK2003) calvertengineering or equipment repair applications where

or equipment repair applications where the original part number and physical configuration need to be matched closely

Helps restore the cleaner water-supply path with a more complete hose replacement

supporting more reliable operation and stronger assembly integrity

Supports more complete heater rebuild work

Hayward C-Spa XI Thermostat Knob Black (CZXTSK2003) calvertengineering or equipment repair applications whereThis 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