I hear they're really pricy for a factory OEM one. Does any of the Autozone or Kragen oxygen sensors work? any suggestions?[/align]

 

The HX O2 sensors aren't cheap especially if have a manual transmission. I had to replace the one thats located before the CAT. The downstream one is costs a lot more.Autozone and Kragens weren't any cheaper for the HX. With my HX, two things cause my CEL to come on were clogged passage ways in the intake manifoldfor the EGR and the bad O2 sensor.

 

there not cheap brand new and not hard to install, use some pb blaster on the bolt because the heat from the header tightens up that bolt. Your better off going to a junk yard and getting one, i have three in my garage to laying around and one bolted to my oem type R header

 

the upper o2 sensor's been replaced last year. the lower one is the one i have to get. i think the dealer wants like $230 or sumthin like that![:-]

 

got one from napa auto parts with a work discount for the downstream oem style $158