O2 sensor spacer for p0420 codes

I've heard and read up on using non-foulers with the o2 sensors..... my question is if there is a standard thread size/length used, or if there are different non-foulers' that I need to be looking for? Don't hate on me for asking this in a new post. If there is a thread that i missed that answers my question please post it.

Truck is an 06' 2.7 with 200k+ miles. I'm not wanting to put a lot of money into fixing emissions in a state that doesn't require testing. I've already confirmed I need new o2 sensors, but I'm not replacing the cat with another cat....just a resonator pipe, and will be installing both o2 sensors with this anti-fouler method.

I found these on Amazon, but I'm not sure if it's what I'm needing to use:

$11 Dorman 42004 Spark Plug Non-Foulers - 14mm Gasket Seat Long Reach Compatible with Select Models, 2 Pack

https://www.amazon.com/Dorman-42004...5c06a1a74d&pd_rd_i=B000BYGJQY#customerReviews

 

ok for legal purposes, I'm not saying you should use a nonfouler to work around cat codes, but if you were working around that way. you may need to open up the nonfouler with a drill bit to fit the O2 sensor into the base a bit. they also make ones that put the sensor at a 90deg and are made for this specific purpose.

 

M18x1.5

 

thanks guys for responding. it was mainly the thread and diameter i was concerned about.

 

just thought i'd post up where I found several options.....

https://jcarpart.com/search?options[unavailable_products]=show&options[prefix]=last&q=o2+spacer

 

Does anyone have any recommendations for ones that worked?