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Old 08-13-2020, 03:29 PM   #1
Firecaptain
 
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Bolt Detectives - Looking for 1 Of These

Transmission tunnel brace bolt 13mm....looking for 1.....(replacement GM 11549138 is different looking and 1/4 inch longer, don't think they are torque to yield).....cross reference?


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Old 08-14-2020, 03:16 PM   #2
Dagstar
 
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I'm looking for bolts for the driveshaft tunnel brace (lowercase k looking brace) and my local dealership gave me this part number: 11588738. Size is M10 x 1.50 x 30 and a search online shows it's used with many mounts and brackets in the car so it might be what you need.
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Old 08-15-2020, 08:46 AM   #3
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Plot thickens.......so my Chevy parts guy says 2 different ones are listed.....
15567071 - M8 x 1.5 x 28
11549138 - M8 x 1.25 x 23



My original is a M8 and has 1.25 thread pitch and is 23-25mm long....so I'm gonna go with that one.....the one 11549138 he had just looked different (top of bolt head is domed not recessed like original, probably different supplier I'm guessing)





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Originally Posted by Dagstar View Post
I'm looking for bolts for the driveshaft tunnel brace (lowercase k looking brace) and my local dealership gave me this part number: 11588738. Size is M10 x 1.50 x 30 and a search online shows it's used with many mounts and brackets in the car so it might be what you need.
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Old 08-15-2020, 10:44 AM   #4
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Yeah if you have the original just take it to a fastener shop and they'll find one to match. I bought some M8 x 1.25 x 30 and they fit fine (hex head with washers) .
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