Genuine GM factory LS balancer bolt LS1, LS2, LS3 and LSA
LS / LT Crankshaft Harmonic Balancer Pulley Bolt Gm part number 12557840
- Genuine GM
- suit VT, VX, VY, VZ, VE, VF with LS Engine
- Will fit all GM Gen 3, 4, & 5 series engines (except LS7/LS9/LT4/LT5)