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BlueStars 42001-0053S Heater Thermistor – Stainless Steel Replacement Part - Compatible with Pentair Sta-Rite MasterTemp and Max-E-Therm Pool & Spa Heater Electrical Systems

Free shipping on orders over $29.99

$12.99

$ 5 .99 $5.99

In Stock

About this item

  • Package includes: 1x 42001-0053S Heater Thermistor
  • Universal Compatibility: The 42001-0053S Heater Thermistor Replacement is designed for seamless compatibility with Pentair Sta-Rite, MasterTemp, and Max-E-Therm pool and spa heaters. This thermistor is a direct replacement for the original part number 42001-0053S. Before purchasing, we recommend double-checking the part number to ensure compatibility with your specific heater model.
  • Premium Quality Construction: Crafted from durable stainless steel, this thermistor is corrosion-resistant, ensuring long-lasting use in harsh pool and spa environments. Its rust-free material makes it a reliable component for the electrical system of your heater. The thermistor is built to withstand temperatures ranging from -20°C to 80°C, offering excellent performance across a wide range of conditions.
  • Simple and Quick Installation: Replacing the thermistor is straightforward and can be done quickly with the help of a tutorial. A helpful video is available on YouTube to guide you through the installation process, which should only take a few minutes. To ensure safety, make sure to turn off the power to your heater before starting the replacement process, and wear protective work gloves to safeguard your hands during the procedure. With just a few simple steps, your heater will be back in action, functioning as good as new.
  • 100% LIFETIME PROTECTION: Enjoy reliable performance with our lifetime protection, ensuring that your product will always be covered for any defects or issues that may arise.


Package includes
1x 42001-0053S Heater Thermistor
Compatibility
The 42001-0053S Heater Thermistor Replacement is designed for seamless compatibility with Pentair Sta-Rite, MasterTemp, and Max-E-Therm pool and spa heaters. This thermistor is a direct replacement for the original part number 42001-0053S. Before purchasing, we recommend double-checking the part number to ensure compatibility with your specific heater model.
Premium Quality
Crafted from durable stainless steel, this thermistor is corrosion-resistant, ensuring long-lasting use in harsh pool and spa environments. Its rust-free material makes it a reliable component for the electrical system of your heater. The thermistor is built to withstand temperatures ranging from -20°C to 80°C, offering excellent performance across a wide range of conditions.


J Grunschel
Reviewed in the United States on May 13, 2025
Direct replacement, however, the threads were quite tight. I only got about four threads engaged. I suppose that is better than the threads being too loose. It doesn't leak, and temperature works!
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