MQ4 Methane Gas Sensor

Marsoni

M251S

$195.00

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

MQ4 Methane Gas SensorMQ 4 gas sensor sensitive material used in clean air conductivity is lower in tin titanium dioxide (SnO2). If the sensor is present in the environment in which the flammable gas, the sensor's conductivity increases with the concentration of flammable gases in the air increases. With a simple circuit, the change in conductivity of the gas concentration can be converted with the corresponding output signal. MQ 4 methane gas sensor for high sensitivity,

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Exactly as described at a decent price. I've found over my decades of doing my own tune ups, the one thing you can't skimp on when tuning up your vehicle, plugs and its shows if you do. Out of the box, all 4 were gapped correctly. Ease of installation depends on your vehicle and ones mechanical ability with PATIENCE. 100% compatible with my vehicle, be sure to match you numbers. Overall 5 stars for performance and price.

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Reviewed in the United States on May 14, 2026

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APTYP

Natrona Heights, US

★★★★★ 5

💯% Authentic NGK Made in Japan.

Got these for my 2016 Subaru Crosstrek. You can't go wrong with NGK, these are 💯% AUTHENTIC, and made in Japan, unlike other NGK plugs that may be sold by other sellers which could be made in Thailand. The Subaru Crosstrek is running like a brand new vehicle after I put these puppies in it.

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Reviewed in the United States on December 23, 2025

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Britton Home Improvement

Lake Worth, US

★★★★★ 5

buy these!!

these are legit original NGK, superior plugs, will buy again

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Reviewed in the United States on May 4, 2026

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Anonymous User