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Why does my new O2 sensor look used?

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03-07-2010 | 01:45 AM

#1

hot-J

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Three Wheelin'

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Why does my new O2 sensor look used?

Not for the Porsche, but a Bosch for my Subaru. What gives? Do these things look used normally?

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03-07-2010 | 01:55 AM

#2

fortysixandtwo

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They typically have a nice brown patina, as if it's been heated. There should be no deposits on the sensor, only some anti-seize on the threads.

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03-07-2010 | 10:52 AM

#3

Bri Bro

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They are tested by heating the tip at the factory.

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bosch, bosh, boshe, bought, new, o2, o2sensor, oxygen, senor, sensor, sensors, supposed, tip, used

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