GM Part Number for Exhaust Manifold Bolts

[xXxPARAGONxXx]

I need to buy a set of new GM exhaust manifold bolts. They fasten the exhaust manifolds to the cylinder head. It's for a Vortec 5.7L (1999). I can't seem to find the GM P/N on any of the parts websites. Does anyone have the GM part number?

 

[df2x4]

I just tried looking them up and I'm running into the same issue, it's like they were never included in the parts diagrams.

Maybe @MrPink can look them up?

 

[Vanishing Point]

May I suggest ARP-bolts.com (a little pricey) or Summitracing.com just in case you are not successful in your search?

 

[Caman96]

These?

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[Nad_Yvalhosert]

No, small block exhaust manifold bolts were 3/8"-16 x 2.5" long. Any ole bolts will work.

 

[xXxPARAGONxXx]

These?

You must be registered for see images attach

I saw that, too, but it didn't seem right. I didn't think the lower intake manifold and exhaust manifold bolts were the same.

 

[xXxPARAGONxXx]

May I suggest ARP-bolts.com (a little pricey) or Summitracing.com just in case you are not successful in your search?

I think I may actually go with ARP rather than OEM GM since the GM bolts are prone to failure.

 

[Caman96]

No, small block exhaust manifold bolts were 3/8"-16 x 2.5" long. Any ole bolts will work.

Yeah that’s what came up when I entered my vin on gmpartsgiant.com

 

[xXxPARAGONxXx]

Hey everyone, do you think it would be better to go with bolts or studs/nuts for the exhaust manifold?

For example, this or this?

 

[wezmykat]

now i'm more confused than before, all the parts listed on rockauto and summit and amazon have a ton of negative comments mentioning that all the sites sell the wrong bolts, needed are 2 1/4" and sold are 2 1/2"