P0422 code resolved for less than $6.00

Got a new code last week on the 97 2.5L with 171k.
P0422 indicates the threshold for the catalytic convertor has been reached.

Here's the fix. Part#420002, a Spark Plug Non-fouler found at AutoZone, less than $6.00.
This part basically "smoothes out" for lack of a better phrase, the heat temp highs and lows so the PCM doesn't see the extreme readings... sort of buffers (or cushions) the heat temp spikes.

This part will need 1 alteration. Take a 1/2" drill bit and drill out the existing hole in the adapter so the 02 sensor will have room to fit....

Remove the 02 sensor.
Screw the adapter Spark Plug non-fouler into the exhaust pipe, then screw the 02 sensor into the adapter with the hole drilled out.
Reconnect the 02 sensor and make sure all wires are zip tied away from the hot intake and exhaust manifolds.

No return code after 1 week.
No change in engine performance, still runs like a new engine!

$6.00 fix beats replacing the main cat any day
Easy and cheap!! My kinda fix

This is the 02 sensor with adapter after repair is completed..

Yes good point, I meant to add that @JEEPCJTJ it should work on the 4.0L just as well, the only difference being the bank 1 and bank 2 locations, which may be identified via an engine code reader.
No, the 02 sensor currently has 16k miles on it so I ruled it out on the fact that it is relatively new and the engine runs great with or without the code.. but i jumped on this quickly so we'll see how she behaves long term.
Code popped up 2 weeks ago and would reset, but come back. Drilling out this adapter seems to have worked. No p0422 CEL since and she runs like new.