I'm planning on getting this O2 sensor from rockauto.

DENSO Part # 2344018
Front; Exc. Canada Built

Want to make sure it'* the right one, and a good one. Any thoughts? Planning to order this Sunday night. Thanks.

That'* the one I nabbed off Rock Auto. It didn't really improve gas mileage as I'd expected, but it hasn't set any codes and I've put about 1000 miles on it.

What kind of codes were you getting? I'm getting P0171 and P0172, as well as P0300.
That'* both rich and lean in bank 1 and missfire.

I hadn't gotten any codes.

I just saw about a 7-9 MPG dip in fuel economy, and figured it must be time for a new O2.

That was teh first thing that got me thinking about it. Last year was gettign about 28mpg hwy, average about 22 or 23. Starting around Oct it went down. now I'm getting about 22 hwy and 18 average. First thought it was just winter driving and winter blend. Now not so sure. figure I'll change it and see what happens.

Well, so far sounds like a good choice. So I guess I'll order one tomorrow, unless someone has a good reason not to?