Need help buying O2 Sensors online
 

They've finally gone, so I need to get new ones. I'm gonna purchase all 4.

First off, what all should I look for, online I see they range from $20 up. At the dealer it sold for $350 each (no joke!).

Also, I've been getting bad gas cap CEL codes and the guys at Auto Zone said it might be the MAF going bad. What should I do about this? Is it related to the 02 Sensor or a separate problem.

Partstrain.com

USOS-4000

Get some PL1824 posilock connectors x16 (comes with connectors but I couldn't figure out how to use them)

Connect same colors of old to new

Wrap in electrical tape

Done!

Got mine at napa auto parts. 89 each. Those you have to do the connections though. Easy nobig deal.