Bolt M8 x 50. Applications as follows;

• Oil Pump to Engine Block. (90~95) Sold individually, Two (2) bolts are required. 
• Power Steering Pump to Cylinder Head. (90~95) Sold individually, Three (3) bolts are required. 
• Lower Crankcase.  (93~95) Sold individually, Two (2) bolts are required.
• EGR Valve Adapter to Eng Block. (93~95) Sold individually, Three (3) bolts are required.

NOTE: This is a USED, GM OEM part.