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Exhaust manifold stud size? Oem?

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Old 07-19-17, 06:12 PM
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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

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Old 07-19-17, 06:15 PM
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edit AGAIN: M10 x 1.5 SORRY
Last edited by FührerTüner; 07-19-17 at 06:19 PM.
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Old 07-19-17, 08:50 PM
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Originally Posted by Fuhnortoner
edit AGAIN: M10 x 1.5 SORRY
thanks Fuhnortoner
I was searching online and found autozone sells this size. Are these a good replacement?
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Old 07-22-17, 10:29 AM
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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.
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Old 07-22-17, 10:56 AM
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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.
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Old 07-26-17, 12:24 AM
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Thanks you guys.
@insightful how much are the studs from the dealer?
I might buy from mazdatrix if they have it.
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Old 07-26-17, 02:59 AM
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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
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Old 07-26-17, 03:06 PM
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Originally Posted by Trueno102
Thanks you guys.
@insightful how much are the studs from the dealer?
I might buy from mazdatrix if they have it.
FYI - Atkins Rotary sells exhaust header studs.
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Old 07-27-17, 07:20 AM
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Originally Posted by BOOGS!
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
Yep youre right. The back flange is an M12. Manifold to block M10.

Sorry for the misinformation.
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