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upper intake bolt

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Old Apr 7, 2026 | 07:58 PM
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From: pine city washington
upper intake bolt
i am missing the fun bolt, the Allen head bolt, the middle one on the passenger side. The one that is a real pain in the butt to get to. What are its dimensions?
 
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Old Apr 7, 2026 | 09:00 PM
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5/16-18 T40

https://www.summitracing.com/search/...ize/5-16-in-18
 
Last edited by wwhite; Apr 7, 2026 at 09:57 PM.
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Old Apr 7, 2026 | 09:40 PM
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I think he lost it. If so, run to a junk yard.
 
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Old Apr 8, 2026 | 08:33 AM
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how long is the bolt? the nearest wrecking yard is 50 miles away.
 
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Old Apr 8, 2026 | 09:09 AM
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1.75” will work.
 
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Old Apr 8, 2026 | 10:02 AM
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Originally Posted by dremtofford
how long is the bolt? the nearest wrecking yard is 50 miles away.
Specifically with part number:
390249-S2 screw (attaches upper to lower intake manifold) - Qty 1

5/16"-18 x 1 & 7/32" torx head
 
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Old Jun 7, 2026 | 11:45 PM
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thanks i finally made it to a hardware store and found one with an allen head.
 
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