Down pipe nut question

[MilitaryTalon]

Does anyone know what size the bolts are that attach the D.P. to the O2 housing? I lost one going down the interstate and I am not sure what size to get. I am going to order a new set of studs and nuts but I need a stand in til they get here.

 

[DSM AWD TSI]

Take off the other nut (do not lose it!!) and take it to Napa or some other auto parts store and have them match it. It should be a common size and they should have it. Good Luck!

 

[MilitaryTalon]

FYI it's M12 X 1.25