JEGS 83447 Cylinder Head Bolt Set is specifically made for GM Gen V LT Engines. This bolt requires the use of a 15 mm socket or wrench and a 13 mm Allen socket or Allen wrench for proper installation. This set comes with all the bolts you need to install your cylinder heads.

JEGS 555-83447 Note:

• The bolts in this kit are torque-to-yield design. This type of bolt is a one-time use fastener that stretches during the torquing process and cannot be reused once installed.