LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 Engines,or LS powered hot rod. Using the original bolt to press the harmonic balancer back on is a really bad idea. Dont do it. When using the original bolt the stress is on only a few threads which can lead you to ruin your crankshaft threads.

Bolt Size: M16 x 2.0 x 180mm
Brand: Unbranded
Finish: NEW
Fitment Type: Performance/Custom
Items Included: Bolts, Washers
Manufacturer Warranty: 2 Year
Material: Cast Iron
OE/OEM Part Number: 12553118
Superseded Part Number: 12553118
UPC: 657814754737