TIME-SERT GM Dowel Pin 93 - 03 Part # 3522352

For use with the Time-Sert kits J-42385-100, J-42385-500, J-42385-2000, J-42385-2030, 4001, and 6001. 

Two dowel pins are needed when repairing one side of the engine.  Four are needed when repairing both sides of the engine block.  Dowel pins are needed to align the head to the engine block after thread repairing the holes.  It is important this is done so the head gasket is seated properly to the engine block.