Pentair MasterTemp & Max-E-Therm Water Pressure Switch — Part 42001-0060S

Pentair MasterTemp & Max-E-Therm Water Pressure Switch — Part 42001-0060S

Marsoni

M251S

$79.99

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

Pentair MasterTemp & Max-E-Therm Water Pressure Switch — Part 42001-0060SSafeguard your pool or spa heater with the genuine Pentair Water Pressure Switch, part number 42001 0060S. This factory original safety sensor continuously monitors water pressure inside MasterTemp and Max E Therm heaters, verifying that adequate flow is present before allowing the burner to ignite. If pressure drops below the required level, the switch immediately shuts down the heating cycle to prevent dry firing and heat exchanger damage.

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I have a 08 Mercedes r350 with a tick and smoke every time I would start in the morning It looked like a smoke screen when I put this in my motor after driving 100 miles it's like I dumped a bottle of microbots in my motor liquid moly is the real deal out shines every other additives nothing can touch this stuff my car feels and drives like it has 200 miles on it when it actually has 289000 miles on it shes quiet and performs better than the first day germans are always way ahead of their time. I will never touch anything else I'm a moly customer for life.

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Reviewed in the United States on May 3, 2026

Verified Purchase

Gadams

Natrona Heights, US

★★★★★ 5

Awesome stuff

Number of Items: 1

This stuff is awesome. I just did an oil change on my 2001 suburban with 400k miles and It increased my oil pressure at least 10lbs. Very impressed. Even made the engine tap disappear. Will recommend.

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Reviewed in the United States on January 15, 2026

Verified Purchase

Albert D. Lodovichetti

Los Angeles, US

★★★★★ 4

Good Txu

Number of Items: 1

Happy with Product

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Reviewed in the United States on May 13, 2026