7 inch  Blower BBC Harmonic Damper
7 inch  BBC Harmonic Damper 7 inch  BBC Harmonic Damper Side View BBC Crank Trigger Kit Option

BBC 7 Inch Super Duty
Harmonic Damper

Part# 106
Only $495.00
Specifically designed for Extreme Duty Boosted Applications on the Big Block Chevy, this Damper exceeds SFI 18.1 ratings and is designed specifically for Blower or Turbo Applications on Big Block Chevys making over 2000 hp.


  • Flying Magnet Crank Trigger Option - Add $100.00
    Get rid of your separate Crank Trigger Wheel by integrating it into the Damper itself! - Saves on average about 9 Ounces over the MSD Crank Trigger Wheel.
  • Crank Trigger Bracket Option - Add $136.00
    BBC Crank Trigger Kit OptionBolt on a matching billet aluminum sensor bracket and mounting hardware, with either passenger (std) or drivers side mounting options.
  • Crank Trigger Sensor Option - Add $65.00
    3/4-16 UNF Flying Magnet Crank Trigger Sensor - Direct Replacement for MSD #8276. Designed to work with Integrated IW Flying Magnet Balancer Option and Brackets.
  • Dual Keyway Option - Add $20.00
    Add dual keyways for Supercharged or Extreme Duty Applications. Requires double keyed crankshaft snout.


  • Outer Diameter: 7"
  • Weight: 8.3 lbs
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.