O2 Oxygen Sensor Compatible for Nissan Quest 2004-2009, Maxima 2004-2007, 350Z for Infiniti FX35 G35 2003-2006, M35 M45 Q45, Downstream, Replace# 226A1AR210, 226A1-8U700 2PCS

Unsure how to product done, it did get the codes cleared for that section but we found out the catalytic converters was bad. But the price is good and install was simple

Diagnose said downstream o 2' s defective

Direct fit for my 2004 FX35. Cleared my P0420 check engine code. I bought these 2 downstream, and 2 upstreams. Just get both sides to be sure. I recommend these sensors.

Good price for o2 sensor

They will work for the downstream on Frontiers and Xterras, however they willNot work for the upstream. Notice the sensor base and the upstream sensors are a male plug, both of these are female.

And the cables were exactly the correct size (as opposed to the last pair that failed with extremely long cables from another company)

Very impressed with the quality of these O2 sensors. Glad I chose this company.

As others have said, these are 2 downstream O2 sensors , at least on the my 2008 Nissan Xterra. In the description it says there is one upstream and one downstream. All lies.....