42001-0053S Thermistor by Pentair | MasterTemp Sta-Rite Max-E-Therm ETI 400 Gas Heater Sensor

42001-0053S Thermistor by Pentair | MasterTemp Sta-Rite Max-E-Therm ETI 400 Gas Heater Sensor

Marsoni

M251S

$79.99

Get it in 3 business days with 1 day shipping. Friday, May 29

42001-0053S Thermistor by Pentair | MasterTemp Sta-Rite Max-E-Therm ETI 400 Gas Heater SensorThe Pentair Thermistor 42001 0053S is the OEM sensor responsible for relaying water temperature readings to your heater's control panel display. When your panel shows inaccurate or abnormally high temperature readings, a failing thermistor is typically the cause and replacement is the only remedy, as this component cannot be reset. Positioned within the manifold adapter inlet, this electronic temperature sensing thermistor continuously monitors

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I finally got around to cleaning up the cable disaster on my home office desk and these grommets were exactly what I needed. They fit perfectly into the 2-inch holes I drilled, and the plastic feels surprisingly sturdy, not like that cheap, brittle stuff that snaps the moment you try to pop the cover back on. The little brush-like opening is a nice touch because it keeps the cords from sliding back down when they aren't plugged in, and the black finish looks really clean against my wood tabletop. For a 4-pack, the price was a total steal, and it honestly makes the whole setup look way more professional than just having raw holes in the desk. If humans are looking for a quick and cheap way to hide cord clutter, these are a solid bet.

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Reviewed in the United States on February 10, 2026

Verified Purchase

Amanda Schepeler

Whiting, US

★★★★★ 5

Great product

Size: 50mm/2inch, Color: Black, Number of Items: 4

Works as described. Love that it came with a hole drill bit!

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Reviewed in the United States on February 24, 2026

Verified Purchase

MKR

Alexandria, US

★★★★★ 5

Desk grommet used on entertainment wall

Size: 50mm/2inch, Color: Black, Number of Items: 4, Size: 50mm/2inch, Color: Black, Number of Items: 4

I used this grommet for the entertainment center wall behind my TV and it looks good and works great. Came with all the tools I needed to cut the hole in the wall and install it.

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Reviewed in the United States on November 8, 2025