Exhaust Manifold Bolt Size

[hpracing10]

Can anyone tell me what the bolt size is for my truck in the topic description? I am replacing gaskets and bolts that hold the manifold to the head. I am just looking for length of bolt, diameter and thread count (course, fine, etc). I assume they are metric but not for sure. I want to get the bolts before I start the project rather than take one out and then have to find a vehicle to run to the parts store with. I plan to just use Grade 8 bolts from the local John Deere dealer as they are much less expensive than actual stainless exhaust manifold bolts. Thanks

[redrabbit]

M8x1.25....thats all i can find for ya, P/N: 12560206

[hpracing10]

Thanks for the quick reply. Thats what I was thinking they were too, 8 mm by 1.25 inches long. Thanks! And if anyone else knows the thread count or anything else I should need to know, please advise!

[OH1]

Thanks for the quick reply. Thats what I was thinking they were too, 8 mm by 1.25 inches long. Thanks! And if anyone else knows the thread count or anything else I should need to know, please advise!

 

M8X1.25 is not the length. The 1.25 refers to thread pitch.

[MYZ-71]

they are just over 1" long in the thread, oem bolts have approx 3/16" tapered and non-threaded portion on end in addition to the 1", not sure if it serves a purpose.

[OH1]

they are just over 1" long in the thread, oem bolts have approx 3/16" tapered and non-threaded portion on end in addition to the 1", not sure if it serves a purpose.

 

The tapered end helps reduce cross-threading.