Pentair Max-E-Therm/MasterTemp Thermistor (42001-0053S) gruber Use part 39514 when the

Use part 39514 when the existing lid is cracked

0 HP impeller to restore proper circulation behavior

9 inch top and 2-3/8 inch bottom openings

A lock ring helps hold the filter assembly together securely while still allowing service access when needed

Selecting the right cable prevents avoidable fitment and communication issues that can happen with near-match alternatives

Pentair Max-E-Therm/MasterTemp Thermistor (42001-0053S) gruber Use part 39514 when theReplace a worn temperature sensing component with this thermistor for compatible Max E Therm and MasterTemp heaters. The thermistor helps the control system read water temperature so the heater can cycle properly and maintain the selected set point. A failing thermistor may cause inaccurate temperature readings, erratic heater operation, or diagnostic errors. This replacement is a practical option when testing confirms the sensor is out of range or