exhaust manifold tribute 2006
 

Going crazy trying to identify specific size stud and nut for exhaust manifold/converter .
Of 6 i only had real trouble with on of the studs and it cracked off in block .
Every site i go to wants to sell me an assortment of studs buit i cant identify the correct size . I have all my exhaust parts except those studs !!

The problem started with the engine chocking as you revved it up in gear or park
Full tune up 12 months ago and ran better than new fpor 5 months. My theory was before i tuned it it was running real rough for a bit and the converter may have started to get clogged . thus the exhaust system job .
122,00 miles on 3.0 tribute 2006

Can't you get them direct from a Mazda Dealer?

exhaust manifold install
 

i have been to the mazda site for reference but they only list a part number not specifics on size . Like all my parts i do my best to spec from a less expensive provider . If i was to buy my exhaust parts from Mazda direct they would charge me over 1100 dollars just for the primary converter . I paid 225 dollars including the gasket at a third party.
I went to PEP BOYS today and of course they had no clue . However i scanned the aisles and found a hardware section where they had one drawer of studs . Limited and out of sort order . I did grab what I thought might ftand paid 1.99 for each. they come in plastic bags so I couldn't actually size them
Hopefully this will work
thanks