I need to replace the primary O2 Sensor(pre cat) the dealer wants about $300! Any ideas or Honday part #'s? Thanks in advance.

 

Mail order would be cheaper for the part itself (Hondaparts, A&H maybe, and I'm sure others).
Was that installed?
Why did it expire?
Sorry about the questions, but the O2 probably caused the demise of my poor old CRX @ 273K.

 

If you're considering $300, just get the GReddy A/F meter. It comes with a pseudo-wideband O2 so it reads much more accurately than standard A/F gauges. I've been told you can use any other heated O2 that fits in the Honda bung, but you will have to wire it to the plug, rather than just plugging it in. I dont advise this, i'm one of those "OEM only" guys but if it'll save ya some cash AND work the same, go for it. Out of the two options, I'd still opt for the GReddy... two birds with one stone. EV.

 

IM yoshi, he might have a few good contacts

 

I'm not sure what the part # is, but IM or email me. Like Koy said, I can get it for you for way cheaper than that.

-y

 

got mine from A&H for under $170 shipped.
easy install too.
DIY and save bucks

 

It should be covered under warranty, if you still have that...