I was in the process of replacing my stock cat with a test pipe on my car a few weeks ago. After trying to remove the o2 sensor out of the cat, I have mangled the outer nut beyond reuse (hindsight is 20/20, I should have waited to do it when the metal was cold and not tried to do it while hot and after consuming lots of beers). I cannot remove it out of the cat, but its still functioning and no codes after a few weeks so I have left it alone. My question is, are the oem honda o2 sensors the best to replace it with or would one from NTK be acceptable? The oem ones are ridiculously expensive compared to the NTK sensors but the NTK sensors look exactly the same and are 1/4 the price. Anyone used a non oem downstream sensor and have success or should I replace it with an oem one and just fork out the cash for it?

Thanks!

 

(Mine is 2006.)

Click it and (maybe) you can enter your car.

-- Chuck

 

Great timing on this question. I replaced my stock cat and exhaust with a Berk HFC and Tanabe Medalion Touring Exhaust a few months back. I had to replace the stock o2 sensor with the NTK one Chuck mentions above because I also stripped the outer nut lol. However, I then ran into a few CEL codes including P0139 this past week. I'm thinking the NTK sensor is the one to blame. I purchased an OEM sensor from ballade sports and just installed it. Hope it will do the trick.

https://www.balladesports.com/produc...-oxygen-sensor

 

I installed a similar non-OEM and get 2 codes still (bank 1/bank 2 heater). I have just been driving it with the CEL, I really don't think the secondary does much.

 

Let me know how it turns out for you. Everything I've read says the non oem ones are hit or miss but the threads were older.

 

Have you had any experience using this one? Always confuses me on these because they say oem ntk but I am unsure if that means just oem replacement or oem style (if that makes any sense).

 

My car still has the OEM sensor. In a Berk high flow cat. I was careful when I moved it.

WithOUT a cat expect many CEL notifications, it ain't the sensor's fault. There are "CEL" fix thingies you can put in series with the sensor. Some are actual tiny cat-converters that fool the sensor.

Honda doesn't make the sensors, they buy 'em.

-- Chuck