Close-up collage of an O2 sensor bung welded between rusty exhau…

The factory weld between the upper (rear) tube and the HEGO bung cracked all the way around.



It looks like it was a cold weld, but the wrecks & rolls probably had a lot to do with it, too. My weld isn't outstanding, but I think it'll stick for a few years. I blew through the pipe, but I was able to fill it.

One of these days, I'll replace the mangled HEGO with a new DY-733 (F4UZ-9F472-C).



And I might replace the whole Y-cats assembly (CATCO 9651).

Owner caption September 2015 · Photo 0 of 5000