GM 2006-2013 LS7 Corvette w/Crank Bolt 10-Rib Drive - 15% Overdrive

LSX 10-Rib Harmonic Balancer for LS7 Corvette - 15% Overdrive

Part# 8503
Only $600.00
SFI 18.1 Harmonic Damper for GM 2006-2013 LS7 Corvette w/Crank Bolt. Features 10-Rib drive & 15% Overdrive Pulley.

Note: 15% overdrive dampers will not fit with stock diameter water pump pulleys. Aftermarket pumps and/or custom smaller diameter pulleys made be needed for proper clearance to damper.



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


  • Diameter: 8.350"
  • Weight: N/A
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.