Quote Originally Posted by CiVeK9
my check engine light is on for a O2 Sensor. I forgot if it was the upstream or the other one. Hopefully its the easier of the two. I'll have Autozone rescan my car and tell me. But should i go oem which is over $150 or get an aftermarket one from Autozone? I think they only run like $50-$80
OEM by far, depending on how badly modded your vehicle is, Honda (assuming that is what you have) will replace faulty parts (ie: broken sensors). If you motor has been modded to much than Honda might tell you to just go hug a root and open purchase a new one youself.