part number for cat?

[erock198]

Can anyone give me the part number for the oem cat on my 2003 yukon denali federal emissions? I see several and I see just one side or the other or both. I need Driver's side.

Thanks

 

[livingez_123]

I don't know the part ## but if one is gone the other isn't that far behind. Do you plan on any exhaust mods? If not, you can buy a replacement Y pipe with new cats.

 

[Duramax05blk]

check summit racing i just welded up my 49 state version cat fit was great. I got the magnaflows i also believe they have a federal version. Not sure of the difference, but the pair was less than one walker or similar brand.

 

[erock198]

I had a device installed that tricks the computer into thinking it is getting the correct reading. All is good for now. I"m sure some of you know what I'm talking about but it was new to me