I'm about to buy one for Honda K series mid-engined project. I'm not intending to fit a cat so does it matter if the sensor is an upstream or downstrean one?...in fact how different are oxygen sensors?

Cheers,

Alan

They're normally the same.

The same I think. Difference on tin-tops is usually the wire length and connector.

adrian

Thanks guys....that's enough feedback for me to purchase one..I know which one I'm getting.


The cheapest one.....

Check the one you are getting have the same number of wires.. As there are difference, I know the toyota 4age 20V are 4wire, not sure about the honda k engine, check on some honda forums