77707-0113 Air Orifice Kit for MasterTemp & Max-E-Therm 400 Pool Heaters | Pentair

77707-0113 Air Orifice Kit for MasterTemp & Max-E-Therm 400 Pool Heaters | Pentair

Marsoni

M251S

$74.99

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

77707-0113 Air Orifice Kit for MasterTemp & Max-E-Therm 400 Pool Heaters | PentairRestore proper combustion performance in your Pentair pool heater with this genuine Pentair Air Orifice Kit. Built with factory spec precision, the orifices in this kit carefully control the air to gas mixture feeding into the burner, promoting efficient heat output and consistent temperature delivery. When your heater's orifices wear or become obstructed, combustion suffers and heating times increase. This direct fit kit returns your Mastertemp or

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The product was in great shape when delivered. Even though the package was thin as it is the delivery was made with card and all was well with product. The instructions were good to use and change in my car. Also it showed the make of vehicle so I won’t be confused at all. Overall it was a great buy

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Reviewed in the United States on May 13, 2026

Verified Purchase

Amazon Customer

Chelsea, US

★★★★★ 5

Fits my Accord perfectly!

Size: 8.8" x 9.3" x 1.2"

Fits my 2008 Accord perfectly and feels just as sturdy as the OEM I used before, which cost nearly twice as much. Plus, it includes activated carbon, something the OEM didn’t have.

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Reviewed in the United States on May 15, 2026

Verified Purchase

Susan F. Montville

Louisville, US

★★★★★ 5

Easy to do it yourself and save!

Size: 8.8" x 9.3" x 1.2"

One place wanted $85 to replace this! Another wanted $50! I ordered this for $10, watched a YouTube video and did it myself! Super easy!

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Reviewed in the United States on May 10, 2026