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MQ4 Methane Gas Sensor

Marsoni M251S
Sale price$195.00
Pay 4 payments of $48.75 a month.Shop Pay
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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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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4.5 ★★★★★
Based on 545 reviews
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Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Good
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
S
Sir Clicks-A-Lot
Port Orchard, US
★★★★★ 5
Great replacement parts!
Perfect fit for my 2003 Mercury Salt Water 150 2 stroke engine. Everything I needed was in the box.” “Good quality parts and saved me a lot compared to OEM.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 6, 2025
B
Brian Giller
Lexington, US
★★★★★ 5
Great brand and value for the price
high quality parts, look just like OEM, packaged well, I like that a parts list is included so that contents can be verified.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2025
S
Verified Purchase
Sylvia E.
Houston, US
★★★★★ 5
OE Quality Part
Worked perfectly. Everything needed is there.
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Reviewed in the United States on April 27, 2026
N
Verified Purchase
nastyfishy
Chelsea, US
★★★★★ 5
10 out of 10
The must do service package. This is a "fits multiple" kit so youll have some extras. The kit also includes the lower unit gear oil seals, which is awesome. I always trust quicksilver to be durable and a great value for the money.
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Reviewed in the United States on February 23, 2026

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