Just put on a walker cat (P0430), was getting a driver side P0430 bank 2 code. 180k miles, orginal cat looked fine, comb was intact but did notice a few silver flakes, very fine
I ordered a Bosch 16513 02 sensor, but that didn’t plug into my X, green plug is too big. I needed the smaller grey one. I got a Denso from the auto store instead.
Mahle f7282 gaskets worked fine, I doubled up on output side. Seemed like the converter was like 1/4 to 1/2” too short so I put two gaskets on and left the old one as well. Seemed to seal fine and passed the spray bottle test. I noticed the flange was bending a little which was a bit unexpected as I torqued it down.
i ordered m10-1.5 nuts, they worked fine for my new bolts but seemed too small for the ones that came w/ the cat (and the one left on the engine side), so I ended up reusing the old nuts.
Install tips - pb blasted the bolts and everything came off. Job would be significantly harder if yours are rusted on. I ratchet strapped the exhaust back after the 2nd cat, if you take of the engine side bolts first. The ratchet will put it off for you. I was able to save the heat shield. Take off the three bolts and rotate it. Than you can push it up and out of the way
Not that tricky just kinda takes forever due to limited access. Having flex head ratchet wrenchs was nice as well as extension and pivot.
my studs (bolts that are welded on walker cat) fit fine, I noticed that arent torq heads so you have to pound them off if they aren’t aligned.
results - no code on test drive, car ran quiet. Could be placebo but exhaust sounded quieter, new cat seemed more restrictive. A little less throttle response maybe?