GM 2006-2013 LS7 Corvette w/Crank Bolt 77 Tooth Cog Drive

LSX 77 Tooth Cog Drive Harmonic Balancer for LS7 Corvette

Part# 857
Only $675.00
SFI 18.1 Harmonic Damper for GM 2006-2013 LS7 Corvette w/Crank Bolt. Features 77 Tooth Cog Drive.


  • Dual Keyway Option - Add $20.00
    Add dual keyways for Supercharged or Extreme Duty Applications. Requires double keyed crankshaft snout.


  • Diameter: N/A
  • Weight: N/A
  • 77 Tooth Cog Drive
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.