Need O2 sensor P/N

[fixkick]

the only issue here, is if the inside, liner collapses and blocks the exhaust.
easy fix, if true remove the liner.
that liner used to glow red hot and help the CAT light off. (like an afterburner on a jet)
its not needed ,
just keep it air tight and the 02 oxy has a chance of working.

yours look ok best i can tell.
if it looks like it can flow free exhaust with 1.6L engine, its ok.