1990 NA oxygen sensor

[Jeff B]

I have this in my other thread but thought it might get more views here

Have a bad oxygen sensor. Bought the bosch replacement without the connector (it was in stock)
it is not the same size as the one in the motor.
What do you guys use on your cars? they listed this one for all 300zx from at least 1989-1996
The bosch has smaller threads than the OEM

[marty1mc]

I am running these...http://www.z1motorsports.com/product_in ... ts_id=3421 $88 for a pair is pretty decent. I haven't had a single issue in the time I have had them installed...

[Jeff B]

Thanks for the link! Someone else suggested these but they didn't come up in a search of Z1 site. Gonna go ahead and order a pair today.

[marty1mc]

Mine work great! I was a little nervous at first since I have had so-so luck with non OEM parts (specifically, water pump, alternator, starter). But, for $88, I decided to take a chance. Z1 is pretty decent about customer service. So, if I had a problem, I am sure I could have returned them and gotten OEM instead. I know now that I don't need to make that decision. Just remember, when you install them, put a little anti-seize on the the threads and don't get any on the sensor itself...

Also, replace both of them.