★★★★★ 5
check to make sure if you need the roller brush too.
fits perfectly
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Reviewed in the United States on April 28, 2026
77707-0431 Pentair Natural Gas Orifice Kit for MasterTemp & Max-E-Therm 200 Heaters
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
77707-0431 Pentair Natural Gas Orifice Kit for MasterTemp & Max-E-Therm 200 HeatersMaintain precise fuel delivery in your pool or spa heater with the genuine Pentair Gas Orifice Kit, model 77707 0431. Designed for MasterTemp and Max E Therm 200 propane heater models, this kit supplies the correctly sized orifices needed to regulate gas flow for clean, efficient combustion. A proper orifice kit keeps flame output uniform, protects internal heat exchanger surfaces, and helps your heater reach target temperatures without wasted fuel.
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Your 77707-0431 Pentair Natural Gas Orifice Kit for MasterTemp & Max-E-Therm 200 Heaters orders ship within 1-2 business days.
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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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4.7 ★★★★★
Based on 988 reviews
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Product Reviews
★★★★★ 5
Spark plugs
As advertised
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Fits well, sane quality as the oem installed
Works really well, it fits and matches the original spark plugs and very easy to install. Very affordable! It starts right up , quality is very good and didn't have to adjust the gap on spark plugs!
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Reviewed in the United States on July 5, 2025
★★★★★ 5
Fresh Spark Plug for the Mowing Season
Just what my push mower needed! Very compatible with my Craftsman M220 push mower. It was the right replacement part and workings just like the original brand B&S plug. Gap was correct right out of the box as my push mower fired right up first pull. Would recommend for anybody with a Craftsman M220.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Good spark
Good fit. Fired right up
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Reviewed in the United States on May 13, 2026
