Any reason why I shouldn't buy sensors from EBay, because $36 including carriage seems a lot cheaper than $76 or whatever from Autozone?

http://cgi.ebay.com/ebaymotors/Bosch...QQcmdZViewItem

 

Wow. That's the cheapest o2 sensor i've ever seen on ebay. I don't know how good bosch o2 sensors are but I also go mine from ebay. I think the brand was walker and all three have are still good after about 40,000 miles.

 

$36 is a good price for a direct fit sensor with harness.

I bought universal Bosch sensors for $28 shipped from GlobalAutomotive on ebay. Now the only bosch sensor they have is the rear one (behind the cat) but you can get NGK sensors which are even better and cheaper ($22 shipped).
It's better to buy all 3 because if one failed, the rest are on the way out.

NGK Sensor link: http://cgi.ebay.com/ebaymotors/NEW-N...mZ160025243489

All maxima sensors from this seller: http://search.stores.ebay.com/GLOBAL...271212QQsofpZ0

All you have to do is to splice the wires into your old sensor's harness (5 min job).

 

I beleive that the sensors from ebay should be work fine.

 

i bought some from ebay - cheap. looks good, but i didnt install them. NGK ones for 25$ with shipping.

i would just get the direct fit ones instead of the universal ones - just my prefrence - i would pay the extra bux for it next time.

 

That's a steal for a direct fit sensor. I recently replaced one of my O2 sensors with a universal. The OEM one that I pulled off was a Bosch.
Splicing a universal is kind of annoying. Direct fit would be much easier.