Rear o2 sensor replacement advice needed!

[97_T4R]

Hey Guys,
I was hoping to get some opinions on replacing my rear o2 sensor. There is so much rust and corrosion I am debating whether it is worth it to replace just the sensor, or go ahead and replace the pipe as well to save myself the hassle. Here's a pic..

 

[Calloway]

Mine was just as bad. I used PB blaster for a few days and vice grips to get the nuts off. Chisel and hammer also to loosen it at the beginning. But just do the O2 sensor.

 

[T4R2014]

Yes, soak the bolts in penetrating oil a few days before you do it. That stuff works wonders. If you need the part number for the sensor then refer to the link in the Tutorial+Doc reference thread.

 

[97_T4R]

Mine was just as bad. I used PB blaster for a few days and vice grips to get the nuts off. Chisel and hammer also to loosen it at the beginning. But just do the O2 sensor.

Thanks Calloway,
After the nuts are off is it much trouble removing the bolts?

 

[97_T4R]

Yes, soak the bolts in penetrating oil a few days before you do it. That stuff works wonders. If you need the part number for the sensor then refer to the link in the Tutorial+Doc reference thread.

Thanks T4R2014,
I have a Denso 4154 on the way for 48.93 shipped from RockAuto.

 

[T4R2014]

Thanks T4R2014,
I have a Denso 4154 on the way for 48.93 shipped from RockAuto.

Wow. Good price. I didn't think they would be cheaper than Amazon.

 

[97_T4R]

Wow. Good price. I didn't think they would be cheaper than Amazon.

Haha yeah accidental discovery i thought was worth mentioning. Came across it referencing part numbers to make sure I was ordering the right one on amazon. They wanted 55 shipped.

 

[thor999]

Kroil worked better for me, available at amazon.com; I used PBblaster for weeks and no success (on my fuel filter, looked about the same).

 

[97_T4R]

Kroil worked better for me, available at amazon.com; I used PBblaster for weeks and no success (on my fuel filter, looked about the same).

Thanks Thor,
Funny you said that because I have about a gallon of kroil in my garage at all times. My dad gets it for free at work so I use it whenever I can.