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Discussion Starter · #1 ·
I am going to need to retap the o2 sensor housing on my new Hotshot header. Either the o2 sensor was messed up when it was put in on my old Stillen header, or, God forbid, I crosstreaded this one. What is the tread count (or number) of threads for the O2 sensor?

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1999 SE Limited: JWT POP, NGK Wires, OBX Muffler 2.25" exhaust, Hotshot header, Eibach Sportlines, KYB AGX, 17 deg. timing
 

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while we're on the topic of O2 sensors does anybody know how to check if yoru sensor is ...um... 'bad'?

ive been getting bad mileage and i wonder if this is the culprit. i dnt wanna replace it to no efect
 
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