I'm about to purchase an O2 sensor (before the cat). I need some input on which one that I should get NGK or Denso. i know Denso is what Toyota use and peoples say OEM is the way to go. I know NGK is a good spark plug brand not sure on their O2. Any input would be great!

 

I got an NTK from Rockauto and it works great. Cost me $60 and took 5 mins to install.

 

Bought the Denso. Got the front change but hot the rear. The plug for the rear goes inside the car. Need to get a how to or instruction on what I need to remove on the interior to get to the plug.