I just need some clarification. I did the ECU self diagnosis and got 5030 Front Right Heated O2 Sensor and 0304 Knock Sensor. Changing O2 first (what previous threads said).

I tried looking for the O2, but not sure if I found it (couple dead links in previous threads unfortunately). I saw something that looked like it near the oil filter (close to the firewall, above and behind oil filter) attached to a cord that I have no clue where it goes. If this is correct, it looks pretty hard to get to. But I will say I was looking at it while the car was not raised.

Also is this the correct replacement part?
http://www.courtesyparts.com/22690-o...ml?cPath=1783&

 

Thats the correct part. The O2s r in your y pipe, right bank is from the manifolds nearest to the firewall. You should be able to see it from the oil filter side.

If you have an after market Y pipe it will be 10 times easier to change it

 

Why is that ?

 

there is waaayyy more room under there with an aftermarket y-pipe because there are no pointless pre-cats and heatshields.

 

Exactly. It should be extremely easy to change.

 

FYI, Amazon sells denso OE fit o2 sensors for about half what courtesy wants(where I got mine)