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Discussion Starter #1
So I need new oxygen sensors. I can get the sensors located before the catalytic converter from my work's normal stock. Here is the problem though:

The rear sensors are a special order item for some reason, and if I special order them, I don't get my discount. I do, however, get a discount on the universal sensors for the back. Is it just as effective to use the universals, or should I spend the extra money to get the OE? Also, how do you go about using universals? Just curious....
 

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Discussion Starter #3
Autozone

If you have the 3.5 OBD-II (96+)

You have two upstream and two downstream:

Upstream OEM (with wiring harness) - 40.99 each
downstream OEM (with wiring harness) - 74.99 each.

Universals are more expensive and need to be spliced onto the old wiring harness...
 

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Go cheap on the downstreams. They are only for emissions. Just get whatever is the cheapest, and just replace your bad one. Not both.


The upstreams should be OEM or a good brand. They are directly used to correct the fuel curve.
 

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Thanks for the quote RealSynthetics. I would have thought the upstreams would have been more expensive because like hypnos said, "They are directly used to correct the fuel curve." The downstreams are still important but I would think that they wouldn't have to be as precise or accurate as the upstreams and therefore cheaper.
 
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