O2 sensors

[nghtrain88]

does anyone have any suggestions for where to get a good set of O2 sensors? should I just stick with the dealer? also, I have a 93 NA all stock exhaust, has the dual mufflers but does it have dual cats as well? would I need 2 or 4 sensors? any info would be appreciated

[Canyoncarver]

The easiet and simplest is to buy the oem sensors. The best prices that I've found are at courtesyparts.com (Courtesy Nissan)

There are some "Bosch" brand o2's out there that have the oem connectors, but finding them seems to be confusing for people. You might save ~$30 for the Bosch parts.

If you look up the oem parts, there might still be two part numbers called out with different prices. (a left side and a right side) Just buy two of the less expensive part numbers. They will work on either side.

fwiw: Nissan does not make o2 sensors. If an o2 sensor does not have the Bosch name on it, then the company that did make the sensor paid Bosch a fee to do so.