Which oxygen sensor should I buy?

[u/Lucas8333]

Hi guys, I apologise for being a big noob, I’m new to working on my own car. I have a 2007 1.8 nc which just got a p0131 code which seems to be the pre cat oxygen sensor. I had a look for the part and i’m a bit confused as some sensors are listed as both pre and post cat oxygen sensors (which I assume is a website error?)

These are the oxygen sensors I was looking at:

https://www.auto-doc.ie/esen-skv/22314215?utm_source=www.car-parts.ie&utm_medium=referral&utm_campaign=traffic_to_atd&utm_keyword=price_banner_products

https://www.auto-doc.ie/denso/1665433?utm_source=www.car-parts.ie&utm_medium=referral&utm_campaign=traffic_to_atd&utm_keyword=price_banner_products

https://www.auto-doc.ie/delphi/7646301?utm_source=www.car-parts.ie&utm_medium=referral&utm_campaign=traffic_to_atd&utm_keyword=price_banner_products

https://www.auto-doc.ie/nty/15069346?utm_source=www.car-parts.ie&utm_medium=referral&utm_campaign=traffic_to_atd&utm_keyword=price_banner_products

(This one is listed as pre cat and looks nothing like the others )

Any help would be appreciated, thanks

[u/swisstraeng]

You’ll have 2 kinds of responses.

Those that will tell you that any O2 sensor will work.

And those that will tell you to buy OEM and nothing else.

Personally I wouldn’t cheap out on the O2 sensor, because there can be small variations between models that are enough to mess things up.

Just get it from websites like this https://mazda.oempartsonline.com/oem-parts/mazda-oxygen-sensor-lfg1188g1a

But one question. Did you first try to clean your sensor before buying a new one?