Exhaust manifold stud size? Oem?
 

Hey guys im looking for the stud size from the exhaust manifold to pre cat. I stripped the stud when trying to remove. What's the best place to order?
Its for a 91 n/a
https://cimg5.ibsrv.net/gimg/www.rx7...544b7617ba.jpg
https://cimg8.ibsrv.net/gimg/www.rx7...96552adfb5.jpg

edit AGAIN: M10 x 1.5 SORRY

thanks Fuhnortoner
I was searching online and found autozone sells this size. Are these a good replacement? https://cimg2.ibsrv.net/gimg/www.rx7...bf652f98e0.png

AutoZone stuff looks like regular galvanised steel. Head to a local fastener store and get stainless studs, nuts and lock washers. That way you won't have this issue in the future. Use plenty of anti-seize when installing.

pretty sure those are inconel like the header studs, in which case they may be available from the dealer. i wouldn't trust some cheap grade 8 galvanized fasteners there.

Thanks you guys.
@insightful how much are the studs from the dealer?
I might buy from mazdatrix if they have it.

i stripped one of those exact studs a couple months ago. i ended up being able to rethread it.
the studs are actually m12x1.25

FYI - Atkins Rotary sells exhaust header studs.

Yep youre right. The back flange is an M12. Manifold to block M10.

Sorry for the misinformation.