Balancer bolt GM 11549124 and M14 bolt and spacers, to the length, this kit can be used to reinstall your existing or install a new harmonic balancer onto your alloytec engine. It is not recommended that you use your existing balancer bolt if you have removed it as these bolts are torque to yield bolts that should not be used again for this reason you can buy a new genuine balancer bolt and kit to be able to reinstall without damaging your balancer using heat or excessive impact force commonly seen by DYI home jobs.
Install torque specs are step 1 100Nm and then step 2 150 degrees.