Bolt (M8), This bolt is used for the following applications, 90~95 models;

• Bolt, Alternator Lower Bracket (1 req'd)
• Bolt, Alternator Upper Rear Bracket to Alternator (1 req'd)
• Bolt, Coil pack Base (rear) to Engine Block. (2 req'd)
• Bolt, Secondary Timing Chain, RH Fixed Guide to Cyl Head (1 req'd)

NOTE: This is a USED, GM OEM part.

See part #9 on the diagram below.