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Pentair MasterTemp & Max-E-Therm Heater Thermistor 42001-0053S | Swimables SW-41-053

Marsoni M251S
Sale price$49.99
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Pentair MasterTemp & Max-E-Therm Heater Thermistor 42001-0053S | Swimables SW-41-053The Swimables Thermistor SW 41 053 is the sensor behind the temperature reading shown on your heater's control panel. When the display begins reporting abnormally high temperatures, that is a clear signal that this component has failed and needs replacement. Because the thermistor is a non resettable part, the only remedy is a fresh unit. Compatible with most Pentair MasterTemp, Sta Rite Max E Therm, and ETI 400 Natural Gas swimming pool heaters, the
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 69 reviews
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Verified Purchase
Meghan Howell
Grantham, US
★★★★★ 2
Screws don’t fit
Color: Beige
Looks beautiful but came with a deficient screw. Screw doesn’t fit and thus can not complete building.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
R
Verified Purchase
Rob W.
Belleville, US
★★★★★ 5
Great for organizing
Color: Black3pro
Arrived as scheduled. Just as pictured. I'm happy with my order. They Do Require full contact to support weight. Panels with bends cut down on what they hold ( slide down under load) I put a piece of tape below the magnet & it stopped the slide. They work great for my smaller shovels & tools.
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Reviewed in the United States on May 4, 2026
R
Verified Purchase
RJM
Houston, US
★★★★★ 5
Perfect. Strong Magnets. Good Plastic Sleeving. I have bought Twice.
Color: Black3pro
Very Handy! I ran out of room for my cordless tools and had an entire side of my toolbox. I bought these and hung the tools on them. Problem solved. No fasteners, no extra wall space. They hold even my heavier cordless tools.
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Reviewed in the United States on February 17, 2026
G
Verified Purchase
george t lyndall
Houston, US
★★★★★ 5
My new magnet hook
Color: Black3pro
Worked great
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Reviewed in the United States on May 17, 2026
E
Verified Purchase
Elisha C.
New York, US
★★★★★ 5
Great magnet!
Color: Black3pro, Color: Black3pro
Heavy duty and great magnet! Shop approved!
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Reviewed in the United States on March 21, 2026

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