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Title: Does exactly what it is supposed to do.
Review: I had it welded into my 304 ss exhaust for my subaru and it does exactly what it's supposed to do. I am using it with a MTX-L wbo2.4/5 instead of 5/5 because the plug does not come with a washer/gasket of any sort. All of the o2 sensors that I have ever seen have some kind of a reusable washer gasket that comes with the o2 sensor. I would think that the gasket would allow for a better seal and less likely hood of the plug to come undone. Maybe I'm wrong. I'm not using it right now, so it doesn't matter to me.Tip: My wbo2's instructions say that you should not install the sensor below 3 or 9 o'clock on the pipe as condensation can damage the sensor.
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