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96 Exhaust Flange Hardware Question

pns0ccc

Active member
Joined
Dec 9, 2002
Messages
41
Location
Bradenton, Fla.
Corvette
1996 Triple Black
I want to replace the HO2S sensors on the right hand side and need to drop the three-way converter to be able to reach the connector for the Bank 2 rear sensor. The nuts securing the TWC to the exhaust manafold cannot be removed from the studs. Anyone know what size or part number the bolts are? I believe they are metric. Thanks
 

pns0ccc

Active member
Joined
Dec 9, 2002
Messages
41
Location
Bradenton, Fla.
Corvette
1996 Triple Black
Found the part GM# 10220453 . In case anyone could use the infomation: 10 x 1 1/2 x 13.7 for the stud. Nut is 10255857 and M10X1FRT. May want to write this in your service manual for future use.
 

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